1976 13¢ Chemistry Centenary
Issue Date: April 6, 1976
City: New York, NY
Printed By: Bureau of Engraving and Printing
Printing Method: Photogravure
The Chemistry Centenary stamp was issued in conjunction with the 100th anniversary of the American Chemical Society.
The American Chemical Society was founded April 6, 1876. Chemistry is the scientific study of substances, how they behave and change under different conditions, and how they interact.