RARE! Biochemist Lewis G Longsworth Hand Signed FDC Dated 1951

  

"Biochemist" Lewis G Longsworth Hand Signed First Day Cover Dated 1951. 16, 1904 - August 8, 1981 was an American. Said that his research helped to. Was notable for creating separation methods that allowed to measure trace. As well as for new methods and.

Improved techniques for studying the structures of proteins. Longsworth was a member of. Was also a member of the. He was the recipient of the 1968.

American Chemical Society Award in Chromatography and Electrophoresis. 1928 and spent his career of 42 year at the.