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Posts Tagged conservation

Painting of woman in black dress, shawl, and lace bonnet in gold frame
Unknown artist, “Lady in a Lace Bonnet,” located in Robert Frost Home in Greenfield Village, before conservation. / Photo by Marlene Gray


Gold-framed painting of woman in black dress, shawl, and white lace bonnet
The same painting, after conservation. / Photo by Marlene Gray

It is that time again, as Greenfield Village opens this week for another exciting season! While you were away, staff at The Henry Ford have been busily cleaning and repairing objects throughout the village buildings. During the winter months, conservation staff move artifacts in need of repair back to our labs for a bit of TLC. Some of these objects are on full display while others hardly ever get the spotlight. One of the latter objects is a painting rarely seen by visitors.

Two-story white wooden house with elaborate portico with columns, topped by a balcony
View of Robert Frost Home with the parlor on the right. / THF1883

Within the Porches and Parlors district of Greenfield Village is the home of American poet Robert Frost. Originally located in Ann Arbor, Michigan, the house was moved to the village by Henry Ford in the 1930s. As you enter the house, a parlor is on the immediate right. If you look inside on the left, you will see a frame on the wall. There hangs a portrait of a woman, “Lady in a Lace Bonnet.” During routine maintenance, our dedicated clean team noticed the painting had some paint losses, which you typically find with old paintings. The paint losses at the top and bottom of the painting were the most obvious. These types of losses can occur when the painting is roughly handled during framing.

Quick off-center snapshot of painting of woman in black dress, shawl, and white bonnet, showing damage at top of painting
Image courtesy of clean team member Teresa McCloud, who noted the damage.

Conservation staff then brought the artwork to the lab to give this hidden painting some much needed attention. Once the painting was removed from the frame, the next step was a good cleaning. Paintings trap abrasive dust and debris, both on the canvas behind and the painted surface. After vacuuming to remove the larger debris, a very mild cleaning agent was used to remove the surface grime collected over the years. What a drastic change that made!

Detail of woman in black dress and white lace collar and bonnet; right half is lighter and brighter than left half
Grime cleaning, with right side cleaned. / Photo by Marlene Gray

Still, the portrait had a yellow tint, visible in the sitter’s face, which is a tell-tale sign of an aged varnish. Various solvents were tested to see what worked best at removing the old varnish, and we selected one that did not cause harm to the paint surface. After the varnish was removed, the portrait looked much brighter and fresher.

Woman in black dress with white lace collar and bonnet; left side of painting is brighter and lighter than right side
Varnish removal, with left side cleaned. / Photo by Marlene Gray

Once our lady was cleaned, it was time to tackle the paint losses. Color-matching the surrounding paint is tricky and takes patience to get right, but when we do, it is so rewarding to see the complete image. Last but certainly not least, a new coat of varnish with stabilizers that resist the harmful effects of ultraviolet radiation was added to protect the painting from light from the window on the other side of the parlor.

After securing the painting back inside the frame (being sure not to scratch the surface), we whisked it back to Frost home, tucked into its “hidden” spot. Now you know what hangs on the wall, and you may even be able to get a little peek from outside the parlor window on your next visit. The lady will be happy to show off her fresh appearance!

Gold-framed portrait of woman in black dress, shawl, and white lace bonnet, hanging on pink wall
“Lady in a Lace Bonnet” returned home. / Photo by Marlene Gray


Marlene Gray is Senior Conservator at The Henry Ford.

collections care, conservation, Greenfield Village buildings, Greenfield Village, #Behind The Scenes @ The Henry Ford, by Marlene Gray, art, paintings

Moss-green man's suit on mannequin; knee-length breeches and long-open coat with embroidery all along front seams and on cuffs
Men’s Suit, circa 1800. / THF29848


Textiles are some of the least durable artifacts that we have in the collections of The Henry Ford. Early textiles are usually made from the “big four”—cotton, linen, silk, and wool. All these materials can disintegrate, be eaten by insects, make homes for mice, and be degraded by mold and mildew. In addition, heat and light affect the color and the integrity of the fabrics. Here at the museum, we are fortunate to have a representative sampling of garments and textiles from the 18th century to modern times.

What We Know about Our Suit

Even though we don’t know who wore the suit or exactly when, it still directs us to a point in time.

This suit has no known provenance (specific history), having been acquired from Anna Brix, an antiques dealer who lived in Philadelphia. The suit is believed to be French or British, but we have no records linking it to a person or even a family. We don’t know exactly when it was made, but this style lasted through the 18th century. By comparing it with similar garments, we can agree that it was probably worn for the first time in the late 18th century. We can tell it is a late-18th-century jacket because the fit is slim, the front is worn unbuttoned and curves to the back, and overall the cut is shorter than in previous decades. It was likely worn to court, or at least to very formal occasions. A suit such as this would have been worn with a highly decorated waistcoat, silk stockings, a cotton or linen shirt with fancy cuffs, and a jabot (frill or ruffle). The back has dual tails and three vents, making it easier and more stylish to wear when mounted on a horse. The colors are all natural dyes and have held up well with age.

Moss-green fabric with floral embroidery in pinks and yellow
Close-up of embroidery. / Photo by Joan Sheridan

The Making of the Suit Coat

Suits such as this were made to attend court and other high occasions, often mere days before they were needed. Hence, the use of embroidered panels, which reduced the time the tailor needed.

Rectangular fabric panel with smaller rectangular extension at top; has floral pattern most elaborate at center and bottom
Embroidered panel for a different waistcoat, uncut. / From the collections of Cooper-Hewitt, Smithsonian Design Museum (1962-54-31)

The coat is made of silk taffeta and was embroidered before the suit was made with silk threads using French knots, satin stitch, and stem stitch. Well-to-do men would visit a merchant to select a color and embroidery pattern, often from the shelf. The merchant would then coordinate with a tailor to custom-make the suit. The embroidered fabric, shown in the example above, even included embroidered rounds that would be crafted into fabric covered buttons by the tailor.

Detail of moss-green suit pocket and part of cuff with elaborate embroidery; an arrow points to a seam coming off the top of the pocket
Showing cut to shorten jacket at the top right of the pocket. / Photo by Joan Sheridan

The embroidered silk was originally made for a taller man than ours. If you look carefully at the image above, you can see where the embroidery was shortened at pocket height. It is blunt cut—sometimes the embroiderers were brought in to camouflage the adjustment and make it less visible, but not in this case. This is the normal position for a height adjustment, as when the wearer stood with their hands clasped in front of them, the seam was covered.

Moss-green fabric with elaborate embroidery; arrows point to two buttons covered in embroidered fabric and embroidered semicircles surrounding each
Embroidery on buttons on back of coat. / Photo by Joan Sheridan

Additional piecing is visible on the back of the garment at the top of the side vents where curved embroidered pieces back the accent buttons.

Discovering the Secrets of the Suit

Being able to look closely at the suit, both inside and out, was a rare treat.

Detail of moss-green coat sleeve with elaborate embroidery and embroidery-covered buttons; two arrows point to two slight picks in the fabric above the cuff
Markings from original button placement are visible above top of cuff; also, the slightly lighter color of silk shows the depth of lengthening. / Photo by Joan Sheridan

Upon closer examination, the outside of the suit tells us even more. The jacket sleeves have been made about two inches longer. There is less wear above the cuff and pin pricks can be seen where the buttons were originally located. It is interesting that the cuffs both show significant wear at the bottom from before and after remodeling.

The knee breeches were refitted to accommodate a larger person. Each side seam was let out, and there, similar to above the coat cuffs, you can see lighter silk with less wear. Finally, the back of the breeches have a wedge of silk inserted to give more room. Small areas of stress at the waist and the drop flap were mended to provide strength, but the breeches are in good condition structurally.

Weighted Silk Is Fragile

Silk has a long and harrowing history, and this suit is a good example of why the use of weighted silk has been greatly reduced in the last century.

Detail of beige silk coat lining with many rips and frayed edges
Shattered silk at the right shoulder and collar. / Photo by Joan Sheridan

We estimate that the coat was relined in the mid-to-late 1800s, as the lining was shattered throughout because it was made using weighted silk. Then and now, silk was sold by weight. When raw silk is processed, up to 30% of its weight is lost when the sericin (the protein that holds silkworm cocoons together) is cleaned from the tough but delicate fibers. Manufacturers compensate for that loss by adding metal salts to the silk, which adhere to the fabric, causing it to weigh more. What they didn’t know then is that this will forever damage the fabric. Shattered silk cannot be repaired and continues to disintegrate with age. The practice of weighting was regulated by the Federal Trade Commission in 1938 to require labeling of silks containing more than 10% metal salts (15% for silk colored black).

The suit’s shattered lining was in poor condition (see image above) and we decided that it should be replaced with modern, non-weighted silk in a matching color. This also allowed us to see what was inside the garment—where the story continues.

A Rare Treat: Viewing the Inside

Seeing the internal structure produced answers and questions.

Numerous patches in various fabrics, layered messily upon each other
A quilt of patches, buckram, and pocket provides insight into the speed with which the coat was made. / Photo by Joan Sheridan

Suits such as these were often hastily made. The outside was sumptuously beautiful with even, neat stitches, but the inside, not so much! The inside would never be seen.

It took many hours to extract the lining from the suit. The stitches that attached the lining to the coat were exceptionally fine and firm. Removing them took small scissors, tweezers, and, at times, a magnifying glass. With the lining separated from the jacket, more interesting things were revealed. It isn’t often that you get to see the original inner-workings of an 18th-century tailor’s creation (see image above).

Moss- and yellow-green fabric with white mildew and white fluff on it
Mildew and fibers from wear prior to vacuuming. / Photo by Joan Sheridan

One thing that was immediately noticeable was that the light blotches on the outside of the garment were caused by mildew. At some point, the suit was stored in a humid environment. The mildew was an old problem, since our museum storage is climate controlled, but the residue still had to be removed. Since a liquid cleaner could not be applied to the silk, the inside of the coat was vacuumed through a screen, then a stubby paintbrush was used to lift mildew spores before vacuuming again. This treatment made a noticeable difference in appearance.

A coat interior lies flat on a table, revealing a patchwork of fabrics and stitching inside
Buckram stiffens the inside of the front of the coat. / Photo by Joan Sheridan

Inside we see the use of buckram as a stiffener around the edges of the front, much as interfacing would be used today. Buckram was and is made of a coarse hemp, linen, or cotton fabric. The buckram was pieced, perhaps because it was scraps, or perhaps that was how wide the fabric was. Cream-colored silk had been sewn over the buckram from the pocket level to the collar, possibly to reduce friction between the silk and the stiffening fabric (see below).

Fabric fraying, stitched together but with gaps revealing stuffing underneath
The left shoulder linen tow shoulder pad covered with the original silk. / Photo by Joan Sheridan

Linen tow was used as padding to create the sloped shoulder shape popular in the late 18th century. This linen waste is full of bits of the stem of the flax plant and it has held together and done its job for over 200 years. The tow was—and is—partially covered by the original white silk lining.

A History Mystery

Anytime we deal with historic objects, there are often more questions than answers. It is interesting to try to suss out the “why?” and apply what we know to arrive at possible solutions. However, some mysteries will always remain mysteries.

Beige fabric with dark brown staining and squiggly stitching
Squiggles on the right pocket—partially for mending, but they beg the question, why? / Photo by Joan Sheridan

The stitching used inside the coat is often coarse. A larger thread was used to bind seams, keep the shoulder pads in place, and attach silk to the buckram. Inside is a patchwork of fabric. The linen pocket linings revealed another interesting find. Both pockets had holes that were inexpertly darned with a snakelike pattern that continues from the darning. We can surmise that the original wearer of the suit was right-handed because the right pocket is very stained—by tobacco or a handkerchief, perhaps?

Replacing the Lining

The lining adds support to the garment, transferring stress to itself and away from the fragile and elaborate embroidery and construction.

Cream silk fabric with many rips and gaps lays on top of gridded paper
Pattern making from the shattered silk lining. / Photo by Joan Sheridan

Once removed, the fragile lining was separated into pieces to be used for making a new pattern. From the pattern a polyester sample lining was made and fitted into the jacket. Adjustments were noted on the paper pattern and revisions made until it was as close as it could be. Polyester is not a substitute for silk, as it behaves differently, but it did serve a purpose—knowing that the pattern was close enough.

A tape measure, spool of white thread, needle, and small auger lay on top of moss-green fabric with elaborate embroidery
Small tools and thread are less likely to damage the delicate fabric. / Photo by Joan Sheridan

With the modified pattern in hand, the cream silk was cut and sewn in with a few minor modifications. The lining was attached using a long blind stitch, unlike the original whip stitching. Changing the stitch type reduced the number of holes that had to be put into the garment, and fewer stitches mean less damage to the original green fabric.

Detail of mandarin-style collar of moss-green jacket with detailed embroidery
The finished collar and newly lined coat, before pressing. / Photo by Joan Sheridan

With the body lining sewn in, the neck lining was next. The edge of the collar was quite worn and treatment was required. A piece of bronze tulle (fine netting) was sewn to the outside edge of the collar next to the main body of embroidery, but not over it. It was then stretched over the damaged area and attached to the inside of the collar. The collar lining was cut freehand because the original is in many pieces. Once the lining was in place, the tulle mend became nearly invisible.

Finishing the Work

The sleeves are very of-the-period. They are curved in shape and tell the story of a suit that was worn often and remodeled in its second life. The sleeve remodeling was likely done at the time the lining was replaced in the mid-1800s.

Detail of moss-green fabric with stitching and wear
Two levels of wear are evident on the sleeves. / Photo by Joan Sheridan

Conservation Specialist Claire Zimmeth completed the project by mending the sleeves and sewing in the sleeve lining. Since there was damage at the end of the original sleeve length and at the end of the remodeled/current length, it was decided that the entire area should be covered with tulle. Again, the tulle was placed to avoid covering embroidery (see the work-in-progress image below).

Detail of moss-green coat sleeve with detailed floral embroidery on cuff; tulle extends from end of cuff
Covering the sleeves with tulle (in progress). / Photo by Joan Sheridan

Bringing It All Together

This suit is an excellent example of 18th-century tailoring, style, color, and embroidery talent. It reminds us that court styles didn’t change much over more than a hundred years and didn’t keep up with the current fashions.

Working on this garment was challenging, mainly in that there is always concern about handling fragile, antique textiles. It was a privilege to work on the suit and be able to explore the history of the suit via the wear, stitches, and inner construction. Even though this jacket has no formal provenance, it still has a story to tell. The suit will be on display in the Fashion and Nature exhibit at the Grand Rapids Public Museum from April 23–July 23, 2022.

Smiling woman in black glasses and black shirt sits at a work table on which is laid out a moss-green jacket with detailed floral embroidery
Photo by Mary Fahey


Joan Sheridan is Volunteer Textile Specialist at The Henry Ford.

making, fashion, conservation, collections care, by Joan Sheridan, #Behind The Scenes @ The Henry Ford

Two painted and two gilt figures among four bells
The Sir John Bennett tower clock. / Photo by The Henry Ford.


The quarter-hour chime of the Sir John Bennett tower clock is a memorable sound that can be heard throughout Greenfield Village, emanating from its four figures—the muse, Gog, Magog, and Father Time (shown right to left above). Early in 2021, Magog’s chime and striking arm developed cracks along the mechanical shoulder.

Close-up of shoulder of figure in different colors and textures, one portion damaged
Recorded damage of Magog’s chiming arm. / Photo by Andrew Ganem.

Painted metal pieces, one in the shape of a forearm and hand, on a cloth on a workbench
Disassembly of Magog’s arm prior to cleaning. / Photo by Andrew Ganem.

The arm was disassembled by Conservation Specialist Andrew Ganem, and conservation and curatorial staff were faced with a decision to repair the original arm or to replace it with a replica. One of the major concerns with repair was that new cracks could develop in the already thin (0.04”) sheet metal when Sir John Bennett becomes operable again. After some discussion, we made a decision to replicate and replace the arm to allow for safe operation of the clock, while preserving the original component in storage for future reference.

The replica arm could not be easily replicated using conventional copper metalwork techniques because of its highly textured surface. An easier replication method came from our partners at Ford Motor Company, who proposed the use of 3D scanning and polymer printing. To accomplish this, the original arm was 3D scanned and that data imported into a computer-aided design (CAD) program. The replica arm was then printed using stereolithography (SLA) 3D printing. You can learn more about this type of printing here.

Yellow shape with blue end and portions labeled with text
Image courtesy Ford Motor Company.

Yellow shape with portions labeled with text
Image courtesy Ford Motor Company.

Yellow semicircle
Image courtesy Ford Motor Company.

The scanned model of the arm was produced by Daniel Johnson and Kevin Lesperance at Ford Motor Company’s metrology lab.

Two hollow shapes--one gray, one painted yellow and blue, sitting on a workbench
A side-by-side comparison between the SLA 3D-printed copy on the left and the original artifact on the right. / Photo by Cuong Nguyen.

Two people handle a hollow statuary arm on a workbench
The 3D-printed part is tested for fit prior to electroplating by Ford Motor Company’s Erik Riha on left and The Henry Ford’s Andrew Ganem on the right. / Photo by Cuong Nguyen.

The SLA plastic material wasn’t strong enough to endure continuous use in the outdoor environment of Sir John Bennett’s tower clock, so Ford engineers proposed coating the replica polymer part with nickel and copper layers using electrical deposition. The nickel layer stiffened the print, while the copper layer offered a better surface for painting.

Statuary figure from the side, showing copperplated arm
Test for fitting the plated arm onto Magog. / Photo by Cuong Nguyen.

Copper form with black base sitting on blue quilted fabric
Holes in the cast iron mount for the arm. / Photo by Cuong Nguyen.

The use of an appropriate painting system that could endure the outdoor environment in Greenfield Village was imperative. Dr. Mark Nichols of Coatings, Surface Engineering, and Process Modeling Research at Ford Motor Company and Dan Corum of PPG recommended PSX-One (high solids, acrylic polysiloxane.) Amercoat 2/400 was used as a primer, as it provides chemical, environmental, and moisture resistance. The paint colors on the original arm were matched to a color sample and duplicated by Andrew Wojtowicz of PPG.

Two identical tubular shapes next to each other, one gold and blue and one gray and blue, with small jar between them
Original arm, left; 3D-printed arm, right; and Munsell color sample in the middle. / Photo by Cuong Nguyen.

The primed surface on the shoulder and elbow was coated with oil sizing and gilded with 24-karat gold.

Four identical tubular shapes--left one gray, next one copper, third gold and blue, right semi-dull gold and blue
Left to right: SLA-printed replica; copper/nickel/copper-plated SLA replica; copper/nickel/copper-plated SLA replica primed, painted, and gilded, ready for use; and original artifact part for comparison. / Photo by Cuong Nguyen.

During a test assembly, we noted that the linkage that connects Magog’s arm to the chiming mechanism was too short, so Andrew fabricated an extension and attached it to the original linkage. He also fabricated new hardware for the elbow joint to accommodate the additional thickness of the replacement part.

Metal piping or tubing with round shape with bolts on end
Extension fabricated by Andrew Ganem. / Photo by Andrew Ganem.

Person wearing mask holds a portion of a painted statue
Photo by Cuong Nguyen.

Painted and gold tubular shape with hinged bend in middle
Elbow joint. / Photo by Cuong Nguyen.

Two metal rods with gold stoppers on either end sit on a metal table
Original and machined hardware. / Photo by Andrew Ganem.

Magog’s clapper for the bell striker required attention by Andrew and The Henry Ford’s welder Chuck Albright, who soldered the joint between the cuff, wrist, and grip for the strike (hammer). A vibration isolator (made from Sorbothane) was inserted to reduce shock between the clapper and the arm during operation.

Painted hand and wrist shape with large hole in hand
Separation between the hand and the wrist. / Photo by Cuong Nguyen.

Painted hand- and wrist-shaped object
Required surface preparation for a strong solder repair. / Photo by Andrew Ganem.

Person's wrist wearing blue glove inside white sculpted fist holding a barbell
The size of the fist. / Photo by Andrew Ganem.

Special thanks to Dr. Mark Nichols, Dr. George Luckey, Erik Riha, Daniel Johnson, and Kevin Lesperance at Ford Motor Company, and to Daniel Corum and Andrew Wojtowicz at PPG. The help from Ford Motor Company specialists and their fabrication equipment made the project possible without invasive modifications to the artifact part.

We also extend a grateful thank you to Jason Hayburn, whose generous donation funded the electroforming of the replica.


Cuong T. Nguyen is Objects Conservator at The Henry Ford.

Sir John Bennett, technology, philanthropy, Greenfield Village buildings, Greenfield Village, Ford workers, Ford Motor Company, conservation, collections care, by Cuong Nguyen, #Behind The Scenes @ The Henry Ford

The Henry Ford has nearly 26 million artifacts in its care—on exhibit in 82 buildings, housed in the Benson Ford Research Center archive, and stored in multiple storage areas. Caring for these collections is an endless task—light levels, temperature and humidity variations, programmatic usage, even the nature of the artifacts themselves (many items in our holdings were never designed to last)—all create difficulties from a preservation standpoint. Even the most apparently durable and indestructible seeming artifacts need to be cared for—whether on exhibit or held in storage.

For many years our greatest storage problems related to off-site storage in buildings that were not intended for museum collections and whose distance from campus made access difficult. This situation changed in 2016 when The Henry Ford entered into an agreement with our neighbor, Ford Motor Company, to acquire half of the Ford Engineering Lab, a 400,000-square foot building immediately adjacent to Henry Ford Museum of American Innovation.

The Henry Ford’s facilities team began a complicated renovation process on the space, newly designated as Main Storage Building (MSB), turning what had been a cubicle warren of offices into a space suitable for storing historic materials. While the process of rehabilitating the building got under way, historical resources staff began determining where to place and how to move a vast range of over 36,000 artifacts—from giant printing presses and steam engines to tiny buttons and toy tea sets.

The first step in the moving process was to identify collections of similar items (for instance, plows) and create an accurate inventory of what was stored offsite. In this early phase of the project, we would gather anything and everything we thought could be part of this grouping, stage it in one area, and check that the accession number (a unique number assigned to every museum artifact that links the object to information and records on the object—essentially, a Social Security number for artifacts) on each item matched the record in our collections management database. When we encountered objects without accession numbers, we considered these “found in collection” items, and assigned them inventory numbers so they could be tracked in the in the future. After all the new records were created and accession numbers verified, we could then track locations using barcodes and scanners.

A group of long metal implements lay on a table
Implements lined up for inventory. / Photo by Kathleen Ochmanski

A group of vacuum cleaners sits on two pallets in a large room with other boxes, worktables, and items in the background
Vacuum cleaners ready to be packed. / Photo by Kathleen Ochmanski

A variety of large equipment sits on tables in a large room
Communications and information technology collections gathered for inventory. / Photo by Kathleen Ochmanski

Before packing, we always assess the condition of the artifacts. We look for mold, hazardous materials, or signs of infestation. In most cases, items were vacuumed or dusted before they were packed away, but sometimes they required more attention to mitigate future problems. In these cases, collections were either isolated or cleaned by conservation staff in one of two labs that were set up in the new building before being moved to their final location within MSB.

A number of people, some wearing jumpsuits and respirators, work on cars and other equipment in a large room
The conservation team (pre-pandemic) cleans oversized artifacts in our new lab to prepare them for storage in MSB. / Photo by Kathleen Ochmanski

When packing up the collection, we packed similar items together using archival-quality materials. The move team developed a packing system that could be applied to nearly all of our artifacts. This standardization helped us create more space-saving density in the new building, and helped us to move faster, as we didn’t need to reinvent the wheel every time we encountered a new type of artifact.

Our packing systems were designed to handle both movement and storage, and included these tools and tactics:

  • Pallet box containers are stackable gray containers that can be filled with small collections, often housed in custom-built boxes that we created.
  • Flat pallets are used for heavy objects secured to pallets with plastic banding. Sometimes we attach plywood to the top of the pallets to create a flat surface.
  • Flat pallets with sleeves are used for lightweight objects secured to pallets with Velcro or ties. The pallet is wrapped in a pallet sleeve for additional protection.
  • Crates. While we don’t build crates in our department, we do repurpose them for use with heavy, difficult, or fragile artifacts.
  • Soft-packing is wrapping artifacts entirely in soft foam or blankets.
  • No packing at all is sometimes warranted. Not everything can be packed with packing materials, so such items are carefully strapped onto or into a truck.


Boxes and objects strapped onto pallets
Packed collections ready to move, including flat pallets, custom boxes, and pallet boxes. / Photo by Kathleen Ochmanski

Our original moving schedule was spread over 24 months—but then came the COVID-19 pandemic. To meet the changing needs and budget of the institution, we streamlined our operations and adapted our process to accommodate additional staff and contractors to move as quickly as possible while maintaining our standard of collections care and keeping staff safe and healthy. Twenty-four months became nine months—nine months in which we processed, packed, and moved over 17,000 artifacts to complete the move out of offsite storage.

While collections operations staff handled the majority of the objects, we relied on help from three types of contractors: professional car movers, rigging experts, and professional art handlers.

Using professional car movers allowed us to move more than one vehicle at a time, which greatly increased our speed.

Two people stand with an open beige-and-green car on the loading ramp of a truck; one kneels in front
The Warrior is loaded into a semitruck (pre-pandemic). / Photo by Kathleen Ochmanski

The rigging experts had bigger forklifts, trucks of all sizes, and cranes for moving our largest objects.

A large piece of wheeled, black machinery sits on multiple dollies in a bright room
A steam traction engine is lifted onto custom-built dollies to roll out of the offsite warehouse. / Photo by Kathleen Ochmanski

Finally, professional art handlers were called on to handle and move furniture from our collection, and to offer extra hands to pack and move glass, ceramics, and communications collections located in the warehouse.

View down aisle with pallet racking on either side filled with chairs, desks, shelves, and other furniture
Furniture collections stored in MSB. / Photo by Kathleen Ochmanski

We also mobilized our fellow staff members to accelerate the move. Registrars worked at the warehouse each week for six months, helping us complete the inventory phase of the move and soft-packing what they could along the way. Team members from the conservation department worked on artifacts as they arrived at MSB and also ventured to offsite storage during the final three months of packing to help clean the artifacts before they were packed. Also, we can’t thank our shipping and receiving staff enough for helping offload our non-standard objects. We could have never accomplished our nine-month goal without all of these dedicated staff!

On Tuesday, March 16, 2021, the final artifact made its way from the warehouse to MSB. The core team and all who collaborated were there to witness the 606 Horse Shoe Lounge sign loaded onto our truck for the final journey. The sign belonged to the “oldest and last” remaining nightclub from Detroit’s legendary Paradise Valley neighborhood. This last artifact represents the end of an era for Detroit—and for The Henry Ford’s offsite collections warehouses.

A group of people wearing masks pose for a photograph in front of, and behind, on a ladder, a large sign
Team photograph with the last artifact to leave the warehouse. / Photo by Rudy Ruzicska

MSB is now home to more than 40,000 artifacts previously located in offsite and onsite storage areas, as well as recent new accessions. Centralizing our collections in MSB is an important step in helping us advance collections care through increased access and improved environments. Most importantly, MSB has allowed us to consolidate a large portion of our collections and our collections work into one building, a first for The Henry Ford. While these items are now successfully located in our new building, we continue to work to make MSB truly shine.

Our move from offsite storage has come to an end, and as we continue to unpack, rearrange, and further consolidate our stored collections (there are 14 storage areas onsite…) we are looking forward to sharing more of what MSB has to offer!


Cayla Osgood and Kathleen Ochmanski are Assistant Collection Managers at The Henry Ford.

Main Storage Building, COVID 19 impact, conservation, collections care, by Kathleen Ochmanski, by Cayla Osgood, #Behind The Scenes @ The Henry Ford

Cleaning artifacts is an everyday occurrence here at The Henry Ford’s conservation department, as anyone who has ever looked into the windows of the lab at the back of Henry Ford Museum of American Innovation knows. Still, it is not every day that stored paintings can be brought into the lab in view of guests to have detailed cleaning and preservation work done. Thanks to Susan and Henry Fradkin, with additional funds from The American Folk Art Society, that is changing this summer, as we address some of the folk art paintings from our sizeable collection.

The first painting to be selected for this project was an oil painting dating from the 1830s–1840s. The artist is unknown, but an inscription on the back of the painting notes that this is a portrait of “Sarah ... at age 4.” This painting was very dirty and yellowed with age. The paint layers were also unstable with some losses in the background. “Sarah” had been conserved in the late 1960s but needed more attention.

After examining the painting, the first steps in the conservation plan were to remove it from its frame and take the canvas off its stretcher, due to distortions from a previous wax-lining.

Painting of girl in blue dress holding basket of fruit
Unframed painting.

Painting of girl in blue dress, laid flat on table with pliers, metal spatula, and staples on table at the end
Removing the staples to take the painting off the stretcher.

Several areas of the painting had flaking and paint losses. To safely move forward with the rest of the conservation, it was necessary to consolidate those areas to ensure no further loss of paint. This was done by removing some of the excess wax on the reverse used to line the painting to a supporting piece of fabric. Wax-lining of paintings was previously used to preserve paintings, but is no longer the accepted technique due to the tendency of the wax to physically change the properties of the paint layers. Therefore, the wax on the back of the canvas was heated and carefully scraped off. These bits of wax were then reheated and placed into areas on the painted side of the canvas that had unstable paint layers.

Once the flaking paint was resecured, it was time to start cleaning. Over time, the natural resin varnish on the paint surface had yellowed, which is common with paintings. To reveal the original paint colors, the varnish layer was removed. To better understand what material is being removed from the surface, ultraviolet (UV) light is useful.

Painting of girl in blue dress, laid flat on table with blue light and tools at one end
UV light to aid in cleaning.

With the use of UV light, varnish has a fluorescence that is different than the matte appearance of the original paint. The UV light tells conservators how thick a layer of varnish is and when we have successfully removed the varnish and exposed the original paint. UV light also shows distinctions between the original paint used by the artist and paint that was applied later, which appears black. In this case, we found that an area of the dress had been previously fixed after the canvas had torn.

Painting of girl's face with paint on left side lighter and less yellowed than on right side
Detail shot showing varnish removed from half of the painting.

Bottom of painting canvas showing floor and shoes, with one portion lighter than the remainder; tools nearby
Detail shot of varnish and dirt removal from the floor.

After testing several small areas with various cleaning solvents, we chose the best one for cleaning this painting. During cleaning, the details of the floor popped out, along with “Sarah” appearing much brighter. As the varnish was removed, it also revealed more areas of paint loss that would need inpainting. Before inpainting, we added fills to several areas where there was paint and gesso loss to create an even level when the new paint was applied.

Close up of black paint showing brown chips
Close up of black paint showing white chips
Before and after adding fills to the areas of paint loss.

With the level fills in place, the painting could be re-stretched onto the stretcher before inpainting. Due to short tacking edges on the original canvas and wax-lining, we added new fabric with an adhesive film on all four edges. This process is called strip lining and the use of this extra material (we used sail cloth) helped strengthen the canvas during the re-stretching process.

Corner showing several layers of fabric
Sail cloth added to edges of original canvas.

After adding the sail cloth, the material was wrapped around the stretcher, pulled taut with pliers, and heated to stay in place. After securing it to the back of the stretcher, extra sail cloth was cut away.

Person wearing gloves holds an iron to a flat item on a table in a lab
Re-stretching the canvas.

A person's hands work at top of painting laid facing down on flat table
Canvas is re-stretched and extra sail cloth removed.

Over time, paint canvas stretches and tightens on its stretcher as humidity levels change. Some paintings can become too loose, and with the weight of an extra piece of fabric and excess wax, this painting was beginning to sag. Re-stretching the canvas helps to evenly disperse the tension of the canvas to the stretcher.

With the canvas re-stretched, it was time to inpaint. This is the process of adding new paint to areas that have previously lost paint. Paint colors are carefully mixed to match the existing paint.

Oval image of painting of girl in blue dress on an easel; table nearby with palette and tubes of paints
Getting set up to inpaint.

Blue-gloved hand holds a paintbrush at the top of a painting of a girl's head
Conservator inpainting.

Once the inpainting was dry, a new coat of varnish was brush-applied. New varnishes have been created that will filter out harmful UV rays, create a barrier layer to protect the paint from dust that can scratch the surface over time, and should no longer yellow with age. After letting the varnish cure, the last thing to do was return the painting to its frame, which had also been cleaned and inpainted.

Framed painting of girl in blue dress holding basket of fruit
The completed painting after conservation.

What’s next? Because of philanthropic support from Susan and Henry Fradkin and The American Folk Art Society, we can continue conservation work on another painting. Here is a sneak peek at an 1850s oil painting attributed to Fredrick E. Cohen: “King Strang and His Harem on Beaver Island.” If you are visiting the museum this summer, stop by the back of the museum and peek into the conservation lab to see its progress.

Landscape painting, with people in camp in foreground
The next painting to be conserved.


Gabbi Saraney is Conservation Specialist at The Henry Ford.

philanthropy, #Behind The Scenes @ The Henry Ford, paintings, conservation, collections care, by Gabbi Saraney, art

Now that we are getting close to wrapping up our Institute of Museum and Library Services (IMLS) Museums for America grant to conserve, photograph, catalog, and rehouse artifacts from our collection, some of the staff who have worked on this grant would like to share interesting objects they’ve encountered over the course of the grant.



Marlene Gray, IMLS Project Conservator, has three objects she would like to share.

Machine on stand with large copper tub and motor below
Dodge & Zuill Easy Model C Washing Machine, circa 1912 / THF186088

As the IMLS Project Conservator for the last year of the grant, clearing space for larger objects in storage was our main priority. However, there were chances to conserve some interesting objects, one of which was a copper electric washing machine from the early 20th century. The dazzling copper tub was a sight to behold while in the conservation lab. While cleaning it, I remember thinking how grateful I am that technology has come such a long way in making tasks simpler!

Next is this footwarmer from the mid-19th century:

Metal box with perforations and decorations on sides and top
Footwarmer, 1830-1860 / THF185807

This footwarmer was a cute object to conserve because of the decorative elements in the wood frame and pierced tin stove box. One of the wooden columns had separated from the rest of the object. The opportunity to completely reassemble the object and give it a thorough cleaning made it feel as though the little stove could still be heated for the approaching cold months.

And finally, this lubricator cup assembly:

Piece of equipment with metal and brass fittings and black knobs
Lubricator Cup Assembly / THF181364

The great thing about conservation is that you are always learning about history through ordinary objects. While the conservation treatment of this object involved relatively simple metal polishing and glass repair, learning about the inventor of the lubricator cup, Elijah McCoy, and his connection to Detroit was fascinating. I highly recommend exploring his story, like I did!

For more information about the conservation process, as well as other milestones that we reached during this grant funded project check out Behind the Scenes with IMLS: Cleaning Objects, Behind the Scenes with IMLS: “Extra Large” Objects, and Exposing the Collections Storage Building.



Next up are Susan Bartholomew and me, Laura Myles, Collections Specialists in the Registrars’ Office. We have worked closely cataloging and researching the objects that have been selected for the grant. It was hard to narrow down our favorite objects, or at least the ones we think are the most interesting, but here is a brief overview of some of the objects we enjoyed working with the most.

My name is Susan Bartholomew. I am a Collections Documentation Specialist and simply put, my role in this project was to update or revise catalog records for objects selected for the grant. This included identifying and applying accession numbers, which allow us to track an object both physically and digitally using our database, as well as conducting provenance research, and creating or modifying existing records in our database using cataloguing standards.

My personal highlights for this grant include the following.

Wooden fire truck with red wheels
Model of a Hook and Ladder Truck, circa 1900 / THF170406

This incredibly detailed handmade model of a turn-of-the-century fire truck is complete with removable ladders, firemen’s tools, and what are possibly the world’s tiniest leather fire buckets.

Large golden teapot with long spout
Shop Sign, 1870-1920 / THF175572

From the tiny to the huge, this is a shop sign in the form of a giant gold-painted tin teapot. It stands over three feet tall and four feet long from spout tip to handle. For more information about this unique giant teapot, check out this blog post Senior Conservator Louise Beck wrote about its surprising discovery.

Wooden telephone designed for wall mounting; bell on top
Acoustic Telephone, circa 1878 / THF176648

A very early example of a type of telephone that had no batteries, this device operated on the same principle as two tin cans connected by a string, an idea that had been around for centuries. They were used in pairs and were connected over a short distance by a tightly stretched wire. With no dependence on electricity, they were advertised as being more reliable than battery-operated telephones. This unit was one of a pair used by the father of the donor to connect the flour mill he operated to the boats he used to ship his flour. One set would be at the mill and the other was placed on the wharf boat half a mile away.



And now, Laura Myles shares her favorites.

Like Susan, I have assisted with cataloging, but I also research objects more in depth to uncover missing dates and/or manufacturers, as well as approving records to go online into our Digital Collections. Working on the grant over the last three years has been a wonderful learning experience, as the objects are so varied you really have no idea what to expect.

Large wooden projector-like apparatus
Charles Ponti Megalethoscope, 1862 / THF179318

Large wooden projector-like apparatus
Charles Ponti Megalethoscope, 1862 / THF179324

Image of building wrapped around a public square
Megalethoscope Slide, "St. Mark's Square," unlit / THF179345

Image of building wrapped around a public square filled with people
Megalethoscope Slide, "St. Mark's Square," lit up / THF179346

Perhaps my most favorite object is the megalethoscope and its slides. One of the best parts of my job is rediscovering hidden treasures in the collection. While we knew this was something special by looking at it, it was not until we were working on the slides that we knew how truly special it was.

At first glance, it looks like the megalethoscope is a fancy magic lantern device—merely projecting the images on slides. The megalethoscope was designed by Charles Ponti while he was living in Venice, Italy circa 1862. Ponti photographed his travels through France, Switzerland, Italy, and Egypt, and it was these photographs that he turned into transparencies for his megalethoscope, costing five francs each at the time. These transparencies look like normal slides until they are inserted into the megalethoscope and manipulated to show night views painted onto the backs of the images but hidden by a dustcover. One of the 22 slides can be seen above. For even more information about the megalethoscope, here is a blog post written about its conservation and photography.

Metal cannon with some decorative banding, mounted on a metal (?) cart
Naval Cannon, circa 1780 / THF179510

Another object that I enjoyed researching was this naval cannon. While we know this cannon was accessioned in 1929, we do not have information about who made it or where it was used. Based on its estimated manufacture date, circa 1780, and similar design to British artillery, I reached out to the Royal Armouries, which helped eliminate the possibility of it being British in origin. Unfortunately, we do not know its history, but at least we know it was very likely made in the United States to be used on a merchant marine vessel.

Wooden sign with image of man and text
Sign / THF172438

This sign advertising the O. H. Perry Inne is one of my favorites just for its connection to the War of 1812 and Oliver Hazard Perry. On the front of the sign is a portrait of Perry, there is an eagle with seventeen stars above (although there were eighteen states by 1813, further adding to the mystery), and the words “Lake Erie” below on the reverse. Perry was regarded as a hero after defeating a British squadron in Lake Erie, which led to Detroit being freed from British control. Unfortunately, this sign’s history has been lost to time, although there are similar signs that have come up for auction. It seems likely that some local establishment capitalized on Perry’s name, probably along Lake Erie. We can only imagine the building it adorned.

Metal turtle whose shell opens to reveal a bowl inside
Spittoon / THF186256

One of the more recent objects to make my short list, and Susan’s as well, is this turtle spittoon. We think it is one of the cutest objects to have come through the IMLS pipeline, especially since spittoons themselves are not the most elegant of objects. Apparently turtle designs for spittoons were quite popular in their time, as well as remaining popular among collectors. The one in our collection is functional: pressing the turtle’s head flips open the shell to reveal the bowl.

If you would like to know more about the cataloging process, you can read more about that here (and see a few more interesting objects we have worked on as a result of this and a previous IMLS grant), and if you would like to know more about the provenance research Susan refers to, check out Associate Registrar Aimee Burpee’s blog post.



This is but a small sampling of some of our favorite objects from this grant. Over the course of the grant so far, we've digitized nearly 3,000 objects, and cataloged and conserved over 4,300 total objects. Unfortunately, this means that we had to be a little bit picky in what we shared here, but hopefully you will discover more of the treasures from our Collections Storage Building yourself while searching our Digital Collections.


Marlene Gray is IMLS Project Conservator, Susan Bartholomew is Collections Documentation Specialist, and Laura Myles is Collections Specialist, all at The Henry Ford.

by Marlene Gray, by Susan Bartholomew, by Laura Myles, digitization, research, conservation, collections care, #Behind The Scenes @ The Henry Ford, IMLS grant

Narrow, two-story brick building with facade featuring oversize figures and a clock

Sir John Bennett. / THF17783

For decades, Sir John Bennett's shop—with its figures of mythological giants Gog and Magog—has intrigued and enthralled Greenfield Village's visitors. Prior to 1930, the jewelry and clock shop was a popular presence many thousands of miles away in London, where its animated giants chimed the quarter-hours above the busy thoroughfare of Cheapside.

While London and Dearborn would seem to have little in common, Gog and Magog—if they could talk, as well as chime—might disagree. Exposure to the weather has been a continuous element in their over 125 years of timekeeping in both England and America. Climate has taken its toll on the figures. So, during the winter of 2005–2006, The Henry Ford undertook an extensive restoration of the Sir John Bennett figures.

Clock Figures


This was not the first time that the figures, or "jacks," as they are known in the world of clocks, had been given a thorough restoration. When Henry Ford originally brought them to the United States in 1931, he had them repaired and repainted. A second restoration and repainting took place in the 1970s.


Statue base and sculpted feet of very cracked wood
Pre-restoration deterioration on the feet of one of the carved wooden figures.

The 2005–2006 restoration, in addition to reversing damage and safeguarding Gog and Magog for future generations, also offered an opportunity to attempt to determine what the wooden figures originally looked like. Deeply carved recesses were carefully excavated in order to discover clues to the original color scheme. Conservators also studied a similar set of Gog and Magog figures in London's Guildhall; a set in Melbourne, Australia; and many historical prints and illustrations to compare our paint analysis with other known examples.

One finding was that the giants' chain mail had, at some point, been painted the color of their clothing. The chain mail is now painted to look like metal rather than cloth. Areas of the giants' armor were found to have traces of gold leaf in the recesses. Also, successive paint layers and weathering had obscured a number of decorative elements in the giants' armor. Previous restorations had used gold-colored paint on the armor, which eventually oxidized and turned brown. In 2005–2006, all the decorative armor components were coated with gold leaf.

The figures themselves were in poor structural condition, with many breaks and numerous large cracks. With a view to preserving as much of the original figures as possible, the decision was made to inject a deep penetrating resin into the porous wood, rather than cut out and replace damaged sections.

Two colorful sculptures of bearded men wearing elaborate costumes
Newly restored Gog and Magog await their return to the Sir John Bennett shop.

Of course, Gog and Magog are not the only figures in the facade of the building—Father Time and a Muse are also in attendance to assist in the job of chiming. Made of plaster rather than wood, these figures were given structural repairs and then gilded with 1,400 sheets of gold leaf. During the repair work on the Muse, decorative elements were discovered on the harp under layers of paint and filler. The decoration was carefully restored, and can be seen on the front vertical post of the harp. A maker's name, "Brogiotti," was also revealed during the restoration.

Finally, the internal mechanisms for all four figures were repaired, and additional lubrication points were added to help minimize future wear.

Two golden statues, one of a woman wearing flowing robes and one of a figure with wings, in a workroom
Father Time and the Muse show off their new coats of gold leaf.

The Clock


The clock mechanism was in need of a complete overhaul. Many of the bronze bearings—separate components fitted into the clock movement's large cast iron frame—had become worn and needed to be "re-bushed" to bring the mechanism back to its original operating specifications. During cleaning, conservators discovered that all of the cast iron framing was originally painted a blue-green with white pin striping. All of this original paint was carefully cleaned and preserved.

Man using a screwdriver on a large and elaborate piece of machinery
Conservator Malcolm Collum reassembles the restored Sir John Bennett clock movement.

During the 1931 reconstruction of the building and clock in Greenfield Village, a number of components were replaced. Cleaning the mechanism helped us gain a better understanding of the extent of Henry Ford's restoration: the modern steel components lack the dark graining found in the original wrought iron pieces. These dark lines are called "slag inclusions," remnants of a glass-like material that gets worked into the iron during the smelting and production processes.

Weathervane


Gog and Magog receive the most attention from visitors—understandably, given their size, character, and animation—but higher up, fully exposed to everything the Michigan climate has to offer, is one of the most vivid elements of Sir John Bennett's shop: the dragon weathervane. The dragon—made of hammered copper and detailed with sharp claws, taut bat-like wings and a fiery tongue—is a quiet masterpiece of design, craftsmanship, and balance. Its swept-back wings and extended tail are designed to catch even the slightest breeze; its head is weighted with lead in order to balance the body and allow for free pivoting.

Man suspended from crane holds onto an elaborate metal weathervane in the shape of a dragon with decorative elements underneath
The dragon weathervane is readied for removal from its perch.

When the dragon was removed from its perch in late 2005, it was found to be in stable condition. Structural repairs were followed by a thorough cleaning to remove corrosion and degraded metallic paint. Finally, rather than simply repaint the dragon, we returned it to its original splendor with a coat of gold leaf.

Bright gold, partially shiny and partially dull, figure of dragon with tools and implements nearby
Dragon weathervane during gilding.

Repaired and resplendent, silhouetted against a Dearborn rather than a London sky, the dragon once again watches over the visitors who gather to watch Gog and Magog.


Malcolm Collum is former Conservator at The Henry Ford and Marc Greuther is Chief Curator and Vice President, Historical Resources, at The Henry Ford. This post originally ran as part of our Pic of the Month series in May 2006.

Sir John Bennett, research, Greenfield Village buildings, Greenfield Village, conservation, collections care, by Marc Greuther, by Malcolm Collum, art, #Behind The Scenes @ The Henry Ford

Gray tractor with red wheels and attachments along side and front
McCormick-Deering Farmall Tractor, circa 1925 / THF179719


International Harvester introduced the first commercially successful row-crop tractor, the McCormick-Deering Farmall, in 1924. It represented a whole new approach to farming. Today we think of corn, cotton, soybeans, and other crops as being planted and harvested in long rows, but before the 1920s, farmers often planted crops in a grid pattern on smaller fields, which they cultivated using draft animals and a shovel plow.

As tractor usage increased, farmers were able to reduce the amount of land dedicated to housing and feeding draft animals. On average, farmers could re-purpose five acres of land for every horse that was no longer needed. This increase in usable land for farming provided a powerful incentive for farmers to own a tractor.

The McCormick-Deering Farmall was the first tractor to incorporate small, closely spaced front wheels that could travel between rows, and a high rear axle clearance to straddle the plants. It also included a power “take-off” unit to run machinery like the New Idea corn picker. International Harvester, with its Farmall tractor, overtook Ford Motor Company to lead the nation in tractor sales.

We recently completed some conservation work on the McCormick-Deering Farmall "Regular" tractor (52.38.4), which is on display in the Agriculture and the Environment exhibit in Henry Ford Museum of American Innovation. The Farmall “Regular” has gone through a series of restorations and re-interpretations since it came into our collection in 1952.

Tractor on wood floor in exhibit, surrounded by other equipment
Tractor on wood floor in exhibit, surrounded by other equipment
Before (above) conservation and after (below) 2019 conservation work, with the addition of the Farmall Cultivator No. HM-229 add-on kit and set of metal wheels.

In 2003, a team of volunteers, under the direction of a conservator, began the process of returning the tractor to its 1926 appearance. During this process, most of the newer Farmall red restoration paint layer was removed, as were F-20 parts that were not appropriate to the “Regular” model.

Most recently, we made the decision to retain the 1926 appearance and re-introduce the 1930s Farmall Cultivator No. HM-229 add-on kit, a compatible addition farmers could purchase. To do this, the tractor would need to be painted in appropriate colors. Luckily, our Curator of Agriculture and the Environment, Debra A. Reid, tracked down the manufacturer’s elusive colors: International Harvester Gray and Harvester Blue varnish enamel paint.

Harvester Gray was fortunately documented by Mark Stephenson at McCormick-Deering.com. The Harvester Blue was matched from residual paint on a gang beam that was hidden behind an installed cultivator part. The paint was compared with a manufacturer’s paint chart from the Wisconsin Historical Society.

Wooden board with gray-blue and red paint on it
The residual Harvester Blue paint on the Cultivator’s gang beam.

Manual cover with text and image of tractor
To aid in completion of this project, a copy of the manufacturer’s original instruction manual we obtained proved to be an invaluable resource.

Three men wearing blue gloves work on a piece of equipment
Conservation volunteers Doug Beaver, Glen Lysinger, and Jim Yousman put on the cultivator rear track sweep attachment, supported by a high-lift pallet jack.

Small vehicle towing a large gray tractor with red wheels, with a man sitting on the tractor and a couple others walking next to it
Conservation Specialist Andrew Ganem steers the tractor as it is towed by Exhibits Preparator Bernhard Wilson.

Logistics included towing the tractor to its display location at the museum and completing the rest of the assembly onsite in the museum; for ease of movement, the rubber wheels were used to maneuver the tractor into the museum.

Large tire dangling from forklift, being guided by a man kneeling on the ground
Exhibit Preparators Ken Drogowski on the forklift and Jared Wylie on the floor remove one of the 40” x 6” rubber wheels.

Three men stand and kneel around a piece of equipment, holding a red metal tire
The metal wheel gets mounted by Exhibits Preparators Jared Wylie and Neil Reinalda and Conservation Specialist Andrew Ganem.

The rest of the cultivator assembly, which includes gang beams, two rear spring teeth, and ten gang sweeps, was added after the tractor returned to the exhibit area. A set of 25” x 4” front metal wheels and 40” x 6” rear metal wheels replaced the rubber wheels. This process required a methodic approach to safely complete, using forklifts, straps, a watchful eye for concerns and risks, and general tools. Once removed, the set of rubber wheels were returned to collections storage.

This work could not have been completed without the help of staff from the collections management, conservation, curatorial, and exhibits teams at The Henry Ford, as well as our dedicated volunteers Glenn Lysinger, Doug Beaver, Jim Yousman, Larry Wolfe, Harvey Dean, Neil Pike, Deb Luczkowski, Maria Gramer, and Eric Bergman.

Check out the recently conserved tractor and a variety of other agricultural items in the Agriculture exhibit in Henry Ford Museum of American Innovation.


Cuong T. Nguyen is Conservator at The Henry Ford.

farming equipment, Henry Ford Museum, farms and farming, conservation, collections care, by Cuong Nguyen, agriculture, #Behind The Scenes @ The Henry Ford

This is the third of a series of blog posts presented in conjunction with the traveling exhibition, Louis Comfort Tiffany: Treasures from the Driehaus Collection. The exhibit, consisting of approximately 60 artifacts, is on view at Henry Ford Museum of American Innovation from March 6, 2021, through April 25, 2021. The lamp shown here is from the collections of The Henry Ford and provides background on themes in the exhibition.

In preparing for the Louis Comfort Tiffany: Treasures from the Driehaus Collection exhibit, The Henry Ford’s curatorial department expressed interest in displaying a Tiffany Studios early floor lamp, circa 1900, from our collections.  This lamp features a telescopic shaft and a dual wick kerosene burner for extra illumination.

Lamp with bronze base and stem, and green and yellow "fishscale" patterned glass shadeTwo black-and-white images of floor lamps next to each other
Our Tiffany lamp (THF186213) as compared to images from Tiffany publications.

In Tiffany publications, the lamp rests on an outer cushion-textured base with six ball-shaped feet. However, the outer base from The Henry Ford’s lamp was missing, with no previous record of its existence when it entered our collection in 1966.

Discussions between Curator of Decorative Arts Charles Sable and conservators led to the decision to create a replica lamp base to ensure both historical accuracy and physical stability to the tall, rather top-heavy floor lamp. The completed object would provide viewers with a more accurate interpretation and the opportunity to experience the object whole, as it was originally designed.

It’s All about the Base


We embarked upon an effort to locate a similar base in museums or private collections to serve as a reference or pattern, to inform the creation of a replacement base—only to discover that the lamp is quite rare. So instead, I decided to create a model base using a CAD (computer-aided design) program, with the design based on photographs from Tiffany publications and auctions. The museum’s lamp was used as a physical frame of reference for measurements and comparisons in CAD. I reached out to several 3D-printing shops to determine if they could use my CAD design to generate a three-dimensional plastic base. Ultimately, the base was printed with the help and generosity of the additive manufacturing team at the Ford Advanced Manufacturing Center.

Green lamp base CAD drawing from aboveGreen CAD drawing of lamp base, from a side angle
The above images are the CAD model of the base from different angles.

Ford Motor Company and its Advanced Manufacturing Center (AMC) offered their additive manufacturing expertise and capabilities. Their team includes Global Chief Engineer Mike Mikula, Rapid Prototype Subject Matter Expert Scott Gafken, Technical Leader in Additive Manufacturing Harold Sears, Additive Manufacturing Engineer Supervisor Jay Haubenstricke, and Supervisor Additive Manufacturing John Phillips.

Collaborative discussions with Scott Gafken revealed that the process would take about 24 hours, which included printing as well as model cooldown for handling. The EOS P770 was employed as an industrial selective laser sintering (SLS) printer and produced the print in Nylon 12 (also known as Polyamide 12 or PA12). The printing material was selected based on its ability to bear the weight of the lamp, and someday be a candidate for an investment casting, for the creation of a metal base.

GIF rotating through several images of 3D-printed circular lamp base
The white image shows the Polyamide 12 print of the base at the Ford Advanced Manufacturing Center. The image with painter’s tape was taken during the process of painting the base. Achieving a finish that matched the original metal lamp required the application of several layers of paint. The image with only one small white section shows the completed base after gloss varnish was applied.

Paint Matching


The bronze surface of the lamp was shades of brown with hints of red, orange, and green. These shades are similar to several paint colors: raw umber, chromium oxide green, sepia, burnt sienna, and yellow oxides. The colors were mixed into several formulations to closely match the patina (aged finish) of the lamp. Diluted paint was applied in layers to allow the variations in the tones to be seen. After discussions with the curator and members of our Experience Design department, we made the decision to leave one section of 3D-printed surface unpainted, to allow visitors to see it in the exhibit.

Man wearing face mask sits at a table covered with bottles, jars, and papers, painting a round lamp base brown
The replica base was painted with the actual lamp present to ensure a match.

Additional Treatment


Beyond the base, other aspects of our conservation treatment included the cleaning of the Tiffany lamp with a bristle brush and vacuum. Wet cleaning included a dilute blend of anionic and nonionic detergents in distilled water, applied with cotton rags and cotton swabs. Residual detergent was then removed with a distilled water wipedown.

A protective barrier of wax was introduced via hot wax application. The bronze surface was heated with a hot air gun and microcrystalline wax was applied and left to cool down. A boar-bristle brush and bamboo picks were used to remove excess wax. The brush and cotton rags were then used to buff the wax layer, resulting in a uniform sheen.

GIF rotating through two photos of round lamp base with swirled pattern; the first is dark and dull and the second is lighter and shiny
GIF showing two images of part of a lamp stem; the first is dark and dull and the second is lighter and shiny
Details of the lamp both before cleaning and after cleaning and wax application.

Additional information on the care of these types of artifacts and more can be found in The Henry Ford’s conservation fact sheets, “The Care and Preservation of Historical Brass and Bronze” and “The Care and Preservation of Glass & Ceramics.”

Please check out this lamp and other Tiffany Studios artifacts in the Louis Comfort Tiffany: Treasures from the Driehaus Collection exhibit before its closing on April 25, 2021.


Cuong Nguyen is Conservator at The Henry Ford.

Henry Ford Museum, Ford Motor Company, philanthropy, technology, glass, by Cuong Nguyen, #Behind The Scenes @ The Henry Ford, collections care, conservation, Louis Comfort Tiffany

Throughout the month of November 2020, we’ve been celebrating reaching the milestone of 100,000 digitized artifacts by sharing out blog posts and fun facts, hosting Twitter chats with our digitization staff, and counting down the 20 most-viewed artifacts in our Digital Collections. In case you missed any of these great resources, we wanted to share them all here for easy reference.

If you follow us on social media, you might have seen the “top 20” countdown of our most-viewed digitized artifacts of all time, but if you’d like to get a broader look, you can check out the top 100 in this Expert Set. Fans of The Henry Ford will recognize many of the artifacts, but there may be some on the list that surprise you.

GIF that runs through 20 slides with text and images
The Henry Ford's all-time top 20 most-viewed digitized artifacts. Do any of them surprise you?

Here, also, are all of the fun facts about our digitization program and our Digital Collections that we shared out on social media.

GIF that runs through slides with text and background images of collections
Twenty fun facts about digitization and our Digital Collections.

During the first week of November, we provided a general introduction to our Digital Collections, our digitization program, and our workflows.

  • First was our announcement that we had just digitized our 100,000th artifact, and were kicking off the month-long celebration. You can also read our press release here.
  • If you’re interested in becoming an expert in using our Digital Collections, or just not sure where to start, this blog post will give you a run-down of the ways you can search, view, and use our digitized artifacts.
  • Associate Curator, Digital Content Andy Stupperich shared how we add context to artifacts in our Digital Collections in this post.
  • Saige Jedele, also an Associate Curator, Digital Content, took us behind the scenes with The Henry Ford’s Innovation Nation to discover how digitization helps shape the stories we cover on the show--and helps you to learn more afterwards.
  • Like many other people around the world, a lot of our staff have spent time this year working from home. Find out how we continued to digitize artifacts despite the closure of our campus this spring in this post.
  • As part of the William Davidson Foundation Initiative for Entrepreneurship, we've digitized nearly 2,500 artifacts from our collections. Find out more about the team and the process from Project Curator Samantha Johnson here.
  • In our first live Twitter chat on November 5, I discussed our digitization program, digitization workflows, and a bit about what you'll find in our Digital Collections.


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conservation, research, collections care, photography, by Ellice Engdahl, #Behind The Scenes @ The Henry Ford, #digitization100K, digital collections, digitization