Roger Sperry (Nobel Prize Medicine 1981) Hand Autographed Signed American Doctor

Roger Wolcott Sperry, (August 20, 1913 – April 17, 1994), was an American neuropsychologist, neurobiologist, cognitive neuroscientist, and Nobel laureate who, together with David Hunter Hubel and Torsten Nils Wiesel, won the 1981 Nobel Prize in Physiology and Medicine for his work with split-brain research. A Review of General Psychology survey, published in 2002, ranked Sperry as the 44th most cited psychologist of the 20th century. Boldly Hand Autographed Signed 1976 13c "The American Doctor" First Day Cover. Excellent Condition. Includes Unsigned Reproduction Photograph. ALL MY ITEMS SOLD HAVE A 100% UNCONDITIONAL MONEY BACK GUARANTEE