THE FATHER OF TRANSFUSION MEDICINE
KARL LANDSTEINER (1868-1943) HANDWRITTEN LETTER SIGNED, “K. Landsteiner”, on a card 4.5 x 3.5, Nov. 24, 1930, by the biologist, physician, and immunologist who received the 1930 Nobel Prize for Physiology or Medicine for developing the modern system of classification of blood groups. In 1937 he identified, with Alexander S. Wiener, the Rhesus factor, thus enabling physicians to transfuse blood without endangering the patient’s life. He was also involved with the discovery of the polio virus in 1909. The letter, in full: “Not being a man of letters may I be permitted to confine myself to these lines of my signature.” In fine condition, with minor age toning.