German rocket scientist (1912–1977) who emigrated to the United States following World War II and assumed an instrumental role in the development of the American space program. TLS, one page, 5.5 x 8.5, Collier’s letterhead, October 15, 1952. Von Braun writes to Stephen White. In full: “Thank you for your interest in my work. I regret that my commitments will prevent my doing anything for your publication at the present time.” The scientist wrote a popular series of articles on space flight for Collier’s in the early years of the American space program. A few mild wrinkles and mailing fold touching signature, otherwise fine condition. R&R COA.