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    • circa 1910

    Postcard with view of a delegation from the Dearborn Drug and Chemical Works seated in a Reeds Chantecler Chair during the annual Master Car Builders' and Master Mechanics' Conventions in Atlantic City, New Jersey. All…

    • circa 1960-Jul

    General view of employee Edward Newmans clearing spent wood chips from an extractor tank at the Hercules Powder Company plant in Brunswick, Georgia. One of two Hercules plants specializing in naval stores, the Brunswick…

    • 1970s

    General view of medical technician Michael D. Shaw using a Perkin-Elmer Model 930 Gas Chromatograph to analyze a urine sample in the toxicology laboratory at St. Francis Hospital in Hartford, Connecticut. Per notations…

    • 1970s

    General view of Jeanette Clarke, employee at New York City's Fordham Hospital, using a Perkin-Elmer Model 403 Atomic Absorption Spectrophotometer to measure the lead content in a sample of blood. Per notations…

    • 1970s

    General view of Wilson Walker, Chief Chemist at the Ohio Department of Health's Sanitary Chemistry Laboratory, injecting a sample of drinking water into the cylinder of a Perkin-Elmer Heated Graphite Atomizer (HGA). Per…

    • 1970s

    General view of an unidentified African-American chemist reviewing the results of an analysis made by a Perkin-Elmer Model 306 Atomic Absorption Spectrophotometer in the research laboratory at the Detroit Edison…

    • 1950s

    Portrait of Percy Lavon Julian (1899-1975), African American research chemist and pioneer in the chemical synthesis of medicinal drugs from plants.

    Percy Lavon Julian was born in Montgomery, Alabama on April 11, 1899…

    • 1957-Mar-12 – 1957-Mar-15

    General view of an unidentified employee loading packages of so-called "chemical cotton" into a boxcar at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a type of purified cellulose obtained…

    • 1957-Mar-12 – 1957-Mar-15

    General view of an unidentified employee operating a loose pulp dryer at the Hercules Powder Company plant in Hopewell, Virginia. The loose pulp dryer was likely used to process cellulosic fibrous materials, such as…

    • 1957-Mar-12 – 1957-Mar-15

    General view of several unidentified employees bailing and wrapping sheets of so-called "chemical cotton" for shipment at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a type of purified…

    • 1951

    General view of an automatic banding machine in use in the Cellulose Department at the Hercules Powder Company plant in Hopewell, Virginia. The employees visible in the photograph are identified as Leroy Brown and John…

    • 1951

    General view of bales of cotton linters (short fiber residues left on the cottonseed after the longer staple, aka the "lint" fibers, are removed by ginning) in storage at the Hercules Powder Company plant in Hopewell,…

    • 1951

    Two views of employee Paul F. Brown feeding raw cotton linters (short fiber residues left on the cottonseed after the longer staple, aka the "lint" fibers, are removed by ginning) into a bale breaking machine in the…

    • 1945-Mar

    General view of employee Johnnie Shands loading bales of so-called "chemical cotton" onto a skid at the Hercules Powder Company plant in Hopewell, Virginia. Chemical cotton, a type of purified cellulose obtained from…

    • after 1964 – before 1991

    Photograph of Dr. Bettye Washington Greene (1935-1995), believed to be the first African-American female chemist employed to work in a professional position at the Dow Chemical Company.

    Bettye Greene was born on March…