Eleven items: ten commemorative covers, seven of which are FDCs, each signed in ink by an acclaimed scientist. Signers are: James D. Watson, Ray Dolby, B. F. Skinner, Martin L. Perl, P. C. Schultz, James Hillier, Robert N. Hall, John Bergey, Werner Heisenberg, and Marcian E. Hoff; and a brief TLS signed, “Robert A. Millikan,” one page, 5 x 5.5, California Institute of Technology letterhead, March 24, 1953. Millikan sends thanks for birthday wishes, in full: “I was greatly touched by your remembering my eightyfifth [sic] birthday despite the fact that birthdays after three score and ten ought to be forgotten.” In fine condition, with some light toning to the covers, and trimmed edges and moderate show-through from mounting on the reverse of the letter. RRAuction COA.
