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MELVIN CALVIN - SIGNATURE(S) 10/16/1974 - HFSID 201439

MELVIN CALVIN. Signature: "Melvin Calvin/Oct 16,1974", 6x3¼ card. Labeled "Mr. Photosynthesis" by Time magazine in 1961, Calvin (1911-1997) was awarded the 1961 Nobel Prize in Chemistry for using radioactive carbon-14 to show steps by which plants turn carbon dioxide and water into sugar during photosynthesis. Today this process is known as the "Calvin Cycle" in photosynthesis. Ink note on verso (no show through). Slightly soiled. Otherwise, fine condition.

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Born: April 8, 1911 in St. Paul, Minnesota
Died: January 8, 1997 in Berkeley, California

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