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- "Leffel Vertical Shaft Hydraulic Turbines. Bulletin A-45," circa 1930 -
- circa 1930
- Collections - Artifact
"Leffel Vertical Shaft Hydraulic Turbines. Bulletin A-45," circa 1930
- Advertising Card for Leffel Wheels and Turbines, James Leffel & Company, circa 1894 - In the last third of the nineteenth century, an unprecedented variety of consumer goods and services flooded the American market. Advertisers bombarded potential customers with trade cards. Americans enjoyed and saved the often illustrated little advertisements found in product packages or distributed by local merchants. Many survive as historical records of commercialism in the United States.
- circa 1894
- Collections - Artifact
Advertising Card for Leffel Wheels and Turbines, James Leffel & Company, circa 1894
In the last third of the nineteenth century, an unprecedented variety of consumer goods and services flooded the American market. Advertisers bombarded potential customers with trade cards. Americans enjoyed and saved the often illustrated little advertisements found in product packages or distributed by local merchants. Many survive as historical records of commercialism in the United States.
- "Leffel Turbine Water Wheels. Bulletin 54," 1916 -
- 1916
- Collections - Artifact
"Leffel Turbine Water Wheels. Bulletin 54," 1916
- Descriptive Pamphlet of James Leffel's Double Turbine Water Wheel, 1870 -
- 1870
- Collections - Artifact
Descriptive Pamphlet of James Leffel's Double Turbine Water Wheel, 1870