Two cachets created by Fleetwood depicting "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.
Fleetwood. “Two First Day Cover Commemorating the 75th Anniversary of the American Chemical Society,” 1951. Witco Stamp Collection, Box 7. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/n7un9lf.
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