# 3906-09 (2005) US Scientists - BK/4, MNH
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US 2005
BARBARA McCLINTOCK (Geneticist), JOSIAH WILLARD GIBBS (Thermodynamicist), JOHN von NEUMANN (Mathematician), and RICHARD FEYNMAN (Physicist)
American Scientists
BARBARA McCLINTOCK (Geneticist), JOSIAH WILLARD GIBBS (Thermodynamicist), JOHN von NEUMANN (Mathematician), and RICHARD FEYNMAN (Physicist)
American Scientists
.
Self-Adhesive Gum
Self-Adhesive Gum
Scott 3906-09
Die Cut 10.75
Stamp Block of 4
Die Cut 10.75
Stamp Block of 4
Mint Never Hinged