TLS signed “H. G. Rickover,” one page, 7 x 8, United States Atomic Energy Commission letterhead, July 16, 1962. Letter to Mr. Alan R. Lichter, declining an invitation to participate in a symposium, in part: “I appreciate your thoughtfulness in writing me, but regret I am unable to take the time from my extremely heavy work schedule in nuclear propulsion necessary to do this.” In fine condition, with three gentle vertical creases along right edge. RR Auction COA.