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- Stoelting Company Operating Manual for the Polyscribe Model 22770, circa 1976 - Polygraphs are more popularly known as "lie detector" machines. They measure a person's pulse, breathing rate, perspiration, and blood pressure. Polygraphs convert this data into electronic signals; inking arms output this information onto paper charts. Trained examiners interpret the results, to determine guilt or innocence. The polygraph has been called out as unethical and legally inadmissible in some cases.
- circa 1976
- Collections - Artifact
Stoelting Company Operating Manual for the Polyscribe Model 22770, circa 1976
Polygraphs are more popularly known as "lie detector" machines. They measure a person's pulse, breathing rate, perspiration, and blood pressure. Polygraphs convert this data into electronic signals; inking arms output this information onto paper charts. Trained examiners interpret the results, to determine guilt or innocence. The polygraph has been called out as unethical and legally inadmissible in some cases.
- Business Card for "G.D. Detection," 1974-1990 - "Doc" Prud'homme is the former owner and chief examiner of Polygraph Specialists Company. Polygraphs are more popularly known as "lie detector" machines. Prud'homme trained to use these devices while stationed in Vietnam. Upon returning to Michigan, he established his own business. The mobility of the polygraph machine allowed him to administer tests throughout the Metro-Detroit area.
- 1974-1990
- Collections - Artifact
Business Card for "G.D. Detection," 1974-1990
"Doc" Prud'homme is the former owner and chief examiner of Polygraph Specialists Company. Polygraphs are more popularly known as "lie detector" machines. Prud'homme trained to use these devices while stationed in Vietnam. Upon returning to Michigan, he established his own business. The mobility of the polygraph machine allowed him to administer tests throughout the Metro-Detroit area.
- "The Saturday Evening Post," May 15, 1948 - <em>The Saturday Evening Post</em>, first published in 1821 as a four-page weekly newspaper, became one of America's most popular weekly publications by the mid-1900s. The magazine contained news, commentaries, fiction, and general interest articles. But its most distinctive feature was its front cover illustrations by artists such as George Hughes, John Falter, J.C. Leyendecker, and Norman Rockwell.
- May 15, 1948
- Collections - Artifact
"The Saturday Evening Post," May 15, 1948
The Saturday Evening Post, first published in 1821 as a four-page weekly newspaper, became one of America's most popular weekly publications by the mid-1900s. The magazine contained news, commentaries, fiction, and general interest articles. But its most distinctive feature was its front cover illustrations by artists such as George Hughes, John Falter, J.C. Leyendecker, and Norman Rockwell.
- Stoelting Company Polygraph Catalog, September 1977 - Polygraphs are more popularly known as "lie detector" machines. They measure a person's pulse, breathing rate, perspiration, and blood pressure. Polygraphs convert this data into electronic signals; inking arms output this information onto paper charts. Trained examiners interpret the results, to determine guilt or innocence. The polygraph has been called out as unethical and legally inadmissible in some cases.
- September 01, 1977
- Collections - Artifact
Stoelting Company Polygraph Catalog, September 1977
Polygraphs are more popularly known as "lie detector" machines. They measure a person's pulse, breathing rate, perspiration, and blood pressure. Polygraphs convert this data into electronic signals; inking arms output this information onto paper charts. Trained examiners interpret the results, to determine guilt or innocence. The polygraph has been called out as unethical and legally inadmissible in some cases.
- Detective Camera, 1886-1890 - In 1885, Robert D. Gray created one of the earliest commercial spy cameras. It was designed for concealment: worn under a shirt, with the small lens protruding from a button hole. The spring shutter on the flat disc could be triggered with little suspicion. After each image was taken, the glass plate inside the disc rotated, producing small round photographs.
- 1886-1890
- Collections - Artifact
Detective Camera, 1886-1890
In 1885, Robert D. Gray created one of the earliest commercial spy cameras. It was designed for concealment: worn under a shirt, with the small lens protruding from a button hole. The spring shutter on the flat disc could be triggered with little suspicion. After each image was taken, the glass plate inside the disc rotated, producing small round photographs.
- Detective Camera, circa 1889 -
- circa 1889
- Collections - Artifact
Detective Camera, circa 1889
- "The Polygraph Story: Dedicated to Man's Right to Verify the Truth," circa 1974 - Polygraphs are more popularly known as "lie detector" machines. They measure a person's pulse, breathing rate, perspiration, and blood pressure. Polygraphs convert this data into electronic signals; inking arms output this information onto paper charts. Trained examiners interpret the results, to determine guilt or innocence. The polygraph has been called out as unethical and legally inadmissible in some cases.
- circa 1974
- Collections - Artifact
"The Polygraph Story: Dedicated to Man's Right to Verify the Truth," circa 1974
Polygraphs are more popularly known as "lie detector" machines. They measure a person's pulse, breathing rate, perspiration, and blood pressure. Polygraphs convert this data into electronic signals; inking arms output this information onto paper charts. Trained examiners interpret the results, to determine guilt or innocence. The polygraph has been called out as unethical and legally inadmissible in some cases.
- Pinkerton Security Service Badge, circa 1960 -
- circa 1960
- Collections - Artifact
Pinkerton Security Service Badge, circa 1960