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    • 1974-May

    Group photograph of the Board of Directors of the American Society for Mass Spectrometry (1972-1974) taken at a conference in Philadelphia. Seated, left to right, are A.H. Struck; Frank H. Field; Harry J. Svec; and F.E.…

    • 1973-Mar-05

    Photograph of the Exxon Research and Engineering Company Mass Spectrometry Research Group on the occasion of Glyn Taylor's 30-year anniversary. Present from left are Jack L. Taylor (Laboratory Technician); Thomas Aczel…

    • 1963

    Installation of the Mass Spectrometer 9 (MS-9) at the Humble Oil and Refining Company Research and Development Division laboratory located in Baytown, Texas. Present in the photograph are, from left, Henry Earle Lumpkin…

    • 1971-Dec-14

    View of the IBM 1800 computer used to accept and process data from a mass spectrometer at the Exxon Research and Engineering Company laboratory in Baytown, Texas. This photograph was taken on the day that use of the…

    • 1964

    Mass Spectrometer 9 (MS-9) in use at the Humble Oil and Refining Company Research and Development Division laboratory located in Baytown, Texas. At left, Henry Earle Lumpkin (Mass Spectrometrist) is seated at the…

    • 1974-May

    Consolidated Engineering Corporation Model 21-103 Mass Spectrometer in use at the Exxon Research and Engineering Company analytical research laboratory located in Baytown, Texas. Laboratory Technician Glyn R. Taylor is…

    • 1974-Jun

    View of a Mass Spectrometer 9 (MS-9) in use at the Exxon Research and Engineering Company analytical laboratory located in Baytown, Texas. On the left, Research Associate Henry Earle Lumpkin operates the console while,…

  1. Portrait of Ezekiel [Ezéchiel] Weintraub, a Russian-born chemist who was the first to produce 99 percent pure boron in 1909.

    • 1941-Sep

    Portrait of Lammot du Pont II (1880-1952), former President of the E.I. du Pont de Nemours & Company (1926-1940) and Chairman of the Board of Directors.

    • circa 1919

    Portrait of Irénée du Pont (1876-1963), chemical engineer and President of the the E.I. du Pont de Nemours & Company (1919-1926).

    • circa 1915

    Portrait of Pierre Samuel du Pont (1870-1954), President of the the E.I. du Pont de Nemours & Company (1915-1919) and a member of the Board of Directors. A graduate of the Massachusetts Institute of Technology, he also…

    • circa 1926

    Portrait of Lammot du Pont II (1880-1952), former President of the E.I. du Pont de Nemours & Company (1926-1940) and Chairman of the Board of Directors.

    • after 1920 – 1944

    Portrait of Leo Hendrik Baekeland (1863-1944), inventor of Bakelite, the first fully synthetic plastic.

    • circa 1900

    Portrait of Herbert H. Dow (1866–1930), founder of Dow Chemical Company.

    • circa 1900

    Portrait of Henry Heide (1846-1931), known in his time as the dean of American candy manufacturers. A native of Germany, Heide immigrated to the United States in 1866 and ran a retail grocery store in Pittsburgh before…

    • circa 1910

    Portrait of Isaac Ott (1847-1916). Ott was born in Northampton County, Pennsylvania on November 30, 1847 and graduated from Lafayette College (class of 1867). Ott went onto study medicine at the University of…

    • 1930s

    Portrait of Carroll A. Hochwalt (1900-1987). Hochwalt worked as a chemical engineer for the General Motors Corporation before co-founding Thomas & Hochwalt Laboratories in partnership with Charles Allen Thomas in 1926.…

    • circa 1920

    Portrait of Arthur Dehon Little (1863-1935), a pioneer of chemical engineering practice and principles who helped establish chemical engineering as a separate profession with a distinct approach and training method.

    A…

    • 1851

    A lithograph portrait of a young Michael Faraday, looking left with his hand on his hip.

    • 1830

    A seated portrait of William Hyde Wollaston (1766–1828), English chemist and physicist. He is holding spectacles and a piece of paper.

  2. A half-length portrait of French scientist Joseph Louis Gay-Lussac (1778–1850).

    • 1796

    A portrait of a seated Matthew Boulton (1728–1809), a British industrialist and entrepreneur. He is seated in front of a window, holding a magnifying glass and a coin. In the background is a large building.

    • Portrait of a Geometrist
    • circa 1800

    A portrait of a man (possibly Athalante Legrand, a French mathematician) in academic dress seated with his right arm on a ledge, pointing to a geometric diagram.

  3. Mezzotint of a portrait bust of the Irish chemist Robert Boyle (1627–1691) in an arched niche.

  4. A half-length seated portrait of Martin Folkes (1690–1754), English mathematician and president of the Royal Society.