Cachet created by Fleetwood depicts "The Chemist" along with ACS logo and the tagline, "Maker of a Better Tomorrow." Stamp issued to commemorate the diamond jubilee of the American Chemical Society. Addressed to and signed by Roger Adams.
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Fleetwood. “First Day Cover Commemorating the 75th Anniversary of the American Chemical Society.” United States, 1951. Witco Stamp Collection, Box 7. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/mw22v548d.
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