Signed First Day Cover.
This French-American microbiologist and environmentalist developed the first commercially produced antibiotics; his 1969 "So Human an Animal" was awarded a Pulitzer Price. Item #24302
Signed First Day Cover, 6½" X 3½", cancelled in Spokane, Washington on 18 April 1974 and with "First Day of Issue" boldly stamped. Single 10-cent "Expo'74" stamp at upper right. Near the center, below the postal cancellation, Dubos signs boldly in black fineline. Very uncommon. Small portion of original transmittal envelope also present.
Price: $95.00
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