SCIENCE, MEDICINE, INVENTION

ASTRONOMER RICHARD A. PROCTOR HANDWRITTEN LETTER SIGNED ON SCIENCE AND RELIGION

CLARA BARTON HISTORIC AUTOGRAPH LETTER SIGNED WITH AMERICAN RED CROSS CONTENT

D. CARLETON GAJDUSEK SIGNATURE WINNER NOBEL PRIZE 1976 PHYSIOLOGY OR MEDICINE

DICKINSON W. RICHARDS SIGNED & DATED ON PRESCRIPTION FORM-NOBEL PRIZE CARDIAC CATHETERIZATION

EARLE OVINGTON SIGNED FIRST DAY ISSUE POSTAL COVER FOR THE TWENTIETH ANNIVERSARY OF HIS FIRST AIR MAIL FLIGHT ON SEPTEMBER 23, 1911

EDWARD TELLER SIGNED FIRST DAY COVER BY THE FATHER OF THE HYDROGEN BOMB

GEORGE EASTMAN SIGNED CARD BY INVENTOR AND MANUFACTURER OF KODAK BOX & BROWNIE CAMERAS

GEORGE GALLUP SIGNED BY NAMESAKE & INVENTOR OF GALLUP POLL

GERTRUDE B. ELION SIGNATURE OF NOBEL PRIZE WINNER FOR AIDS AND ORGAN TRANSPLANT DRUG TREATMENT

JAMES A. VAN ALLEN SIGNED CARD AM SPACE SCIENTIST VAN ALLEN RADIATION BELTS

JAMES VAN ALLEN SIGNED PHOTO BY SCIENTIST OF FIRST SPACE-AGE SCIENTIFIC DISCOVERY

JAMES WATSON SIGNED ORIGINAL SKETCH OF DOUBLE HELIX DNA STRAND