Short A.L.S. "George Beadle", 8vo. 1 page California Institute of Technology, Pasadena, Dec. 16 [1970's], obliging a request for an autograph, in full: "Here's that picture you asked for [enclosed]. With Season Greetings to you and George." Also included: the original enclosed 4x5 ISP, black & white, depicting the scientist dressed in his lab coat, inscribed "To George - With Best Regards - George Beadle". Mounting remnants on verso of the A.L.S. while photograph has tiny striations at the corners which do not detract.
American scientist who was the recipient of the Nobel Prize in Physiology (1958) for co-discovering the role of genes in regulating biochemical events within cells.