Search Results
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Do roaches spread cancer? Tanglefoot Spray
- 1926-Apr-10
Color print magazine advertisement for Tanglefoot Fly Spray. The advertisement notably details the parasitic theory of cancer propagated by Dr. Louis Westenra Sambon (1867-1931) to advocate for the use of pesticides…
- Subject Diseases, Pesticides, DDT (Insecticide), Tanglefoot Company, Cancer, Insecticides, Toxins
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Rod spinner arranged for production of bristles
- 1937-Mar-23
General view of a rod spinner arranged for the production of bristles during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. During production, a cylindrical…
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20 items
An Exhibit Prepared Under the Auspices of the National Research Council with the Cooperation of the Chemical War Service of the United States Army, Now Permanently Installed at the Smithsonian Institute, Washington D.C.
- 1921
Exhibition program for "The Chemical Exhibit" installed at the Smithsonian Institute in Washington, D.C. circa 1921. The central feature of the exhibit is a topographical model showing coal tar and other chemical…
- Author Howe, Harrison Estell, 1881-1942
- Contributor United States. Army. Chemical Warfare Service
- Creator Of Work National Research Council (U.S.)
- Publisher Chemical Foundation (U.S.)
- Subject Chemistry, Technical, Coal-tar products, Chemical warfare
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25 items
Naphtol AS on Rayon
- 1927
Sample book for Naphtol AS dyes, used for "embroidery purposes, for effects in silk, woollen and cotton clothes, for curtains, underwear made of artificial silk, etc." Contains dyeing instructions and 70 mounted dyed…
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3 items
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3 items
Letter from Clare Evans to Arnold O. Beckman
- 1937-Aug-26
In this letter, Evans discusses a new electrode design for use in Beckman pH meters.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an…
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2 items
Letter from Arnold O. Beckman to J. J. Murdock
- 1935-Sep-30
The letter discusses shipment of wheat germ, expenses; demonstrations of the acidimeter at the Pennsylvania General Hospital, University of Pennsylvania, the Department of Agriculture, and the Bureau of Standards;…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Aug-29
Regarding Beckman's business travels to meet with two potential acidimeter distributors, Central Scientific Co. and Sargent Co.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Aug-29
Regarding Beckman's business travels to meet with a potential acidimeter distributor, A. S. Aloe Co., and Drs. Ball and Rodewald at the Washington University in St. Louis.
Dr. Arnold O. Beckman (1900-2004) invented the…
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3 items
Letter from I. H. Lyons to Arnold O. Beckman
- 1935-Jun-23
This letter includes discussion of personnel issues and policies. Lyons expresses approval for the "Beckman Acidimeter" name.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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3 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Jun-23
In this letter, Beckman discusses acidimeter production, personnel issues, patent applications, and the naming of the instrument.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Jun-03
Though unsigned, context indicates that this letter was written by Beckman.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career…
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2 items
Letter from I. H. Lyons to Arnold O. Beckman
- 1935-May-31
Lyons gives Beckman advice about personnel decisions and discusses early sales of the "acidimeter."
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began…
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2 items
Contract between Howard Cary and Arnold O. Beckman
- 1935-May-31
The contract outlines details (including salary, confidentiality, and intellectual property rights) of Howard Cary's work for Arnold Beckman.
Howard Cary (1908-1991) was a Caltech-educated engineer who joined National…
- Creator Of Work Cary, H. Howard (Henry Howard), 1908-1991
- Subject Labor contract, Beckman Instruments, Inc.
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Portrait of Thomas Midgley, Jr. (1889-1944)
- 1930s – circa
Portrait of Thomas Midgley, Jr. (1889-1944), an American engineer and chemist who discovered the effectiveness of tetraethyl lead as an antiknock additive for gasoline.
Thomas Midgley, Jr. was born on May 18, 1889 in…
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Portrait of Samuel Cox Hooker (1865-1935)
- 1920s – circa
Portrait of Samuel Cox Hooker (1865-1935). Hooker was born on April 19, 1865, in Benchley, Kent, England and studied at the Government Science School in South Kensington, London. Hooker earned his PhD from the…
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Portrait of George O. Curme, Jr. (1888-1976)
- 1930s – circa
Portrait of George O. Curme, Jr. (1888-1976), popularly known as the father of ethylene and for his pioneering work on applications for by-products of petroleum processing.
Born in Mount Vernon, Iowa on December 24,…
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Portrait of Joseph X. Labovsky (1912-2013)
- 1939
Portrait of DuPont chemist Joseph X. Labovsky (1912-2013), taken at the DuPont pilot plant in Seaford, Delaware during the early stages of nylon production and research.
Joseph X. Labovsky was born in Kiev, Ukraine on…
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Feeding nylon chips into five-position spinning machine
- 1938
Close-up view of DuPont employee Mike McCall feeding nylon chips into the hopper of a five-position spinning machine used at the DuPont pilot plant in Wilmington, Delaware during the early stages of nylon production and…
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Steam chimney on five-position windup and spinning machine
- 1938
Close-up view of DuPont employee Richard L. Huber adjusting the steam chimney on a five-position windup and spinning machine at the DuPont pilot plant in Wilmington, Delaware during the early stages of nylon production…
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Gas cylinder on five-position windup machine
- 1938
Close-up view of a DuPont employee adjusting a gas cylinder on a five-position windup machine at the DuPont pilot plant in Wilmington, Delaware during the early stages of nylon production and research. The employee is…
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Gas cylinder on five-position windup machine
- 1938
Close-up view of a DuPont employee adjusting a gas cylinder on a five-position windup machine at the DuPont pilot plant in Wilmington, Delaware during the early stages of nylon production and research. The employee is…
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Five-position windup at nylon pilot plant
- 1938-Jul-15
General view of a five-position windup machine located on the ground floor of the Spinning Room at the DuPont pilot plant in Wilmington, Delaware during the early stages of nylon production and research.
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Spinning room at nylon pilot plant
- 1938-Jul-15
General view of the second floor of the Spinning Room during the early stages of nylon production and research at the DuPont pilot plant in Wilmington, Delaware. Visible on the left-hand side of the photograph are steam…
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Two-position vertical windup at DuPont Experimental Station
- 1938-Mar-08
General view of a two-position vertical windup machine used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware.