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      Alvin Roth (Nobel Prize Economics 2012) Hand Signed Photograph

      $21.09
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      Charles James Sprague – important letter on the early study of fungi in America

      $316.80

      Steve Woz Wozniak SIGNED 11×14 Photo Big Bang Theory Apple I PSA/DNA AUTOGRAPHED

      $50.16
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      Dr Jonas Salk signed 1984 Health Research first day cover created Polo vaccine.

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      nolan bushnell signed joystick atari 2600 PSA/DNA COA Joy Stick

      $264.00
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      Dr. Bradley M. Patten Signed Photo Autographed Signature Embryologist Scientist

      $5.27
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      Albert SABIN (1906–1993): Typed Letter Signed (VACCINE) (CHILDREN'S HOSPITAL)

      $95.04
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      Rene J DUBOS / Signed First Day Cover

      $60.19
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      Steve Woz Wozniak SIGNED 8×10 Photo Big Bang Theory Apple PSA/DNA AUTOGRAPHED

      $58.08
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      GEORGE WASHINGTON CARVER – AUTOGRAPH LETTER SIGNED 05/30/1932

      $739.20
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      Burton Richter (Nobel Prize Physics 1976 ) Hand Signed 1976 Nobel Prize Booklet

      $13.20
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      1877-87 Eight Letters to the FRENCH ASTRONOMER who catalogued the heavens

      $39.60

      John Nash Jr Nobel Prize Economics Game Theory Signed Autograph Slab PSA DNA

      $211.19

      Neil deGrasse Tyson Astrophysicist Hayden Planetarium Signed Autograph FDC JSA

      $79.19

      Herman Muller Signed Slip / Nobel Prize Medicine & Physiology Autographed RARE

      $126.71
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      Arthur Leonard Schawlow (Nobel Prize Physics 1981) Signed Geophysical FDC

      $18.48

      SYDNEY BRENNER – COMPOSITE PHOTOGRAPH SIGNED WITH CO-SIGNERS

      $330.00
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      ROSALYN S. YALOW – SIGNATURE(S)

      $36.96

      William W. Scott Signed Photo Autographed Signature Doctor Surgeon Urologist

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      James Cash Penny Businessman Founder J.C Penny Stores Autograph Signed Autograph

      $44.88
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