Chemistry -cent issue stamp ~ “American Chemical Society” ***** The -cent Chemistry stamp was issued on April 6, , in conjunction with the centenary of the American Chemical Society (ACS). The design by Ken Davies depicts various flasks, a separatory funnel, and a computer tape. Up to the end of the designs are all PD. ( PD-US-GOV) ***** This image is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title , Chapter 1, Section of the US Code. ( PD-US-GOV) *****
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