One of the most important rocket developers and champions of space exploration during the period between the 1930s and the 1970s. Designed the first self-contained rocket missile. TLS, one page, 5.5 x 8.5, Collier's letterhead, October 15, 1952. In part: 'I regret that my commitments to Collier's will prevent my doing anything for your publication at the present time.' In fine condition, with horizontal fold affecting a few letters of the signature. RRAuction COA.