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Cachet created by ArtCraft depicts a male and female chemist working in a laboratory setting, with text reading, "A Century of Modern Chemistry." Cover signed by Glen Seaborg.
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…
Cachet depicts two chemists working in a laboratory.