Aerospace engineer and NASA manager (1925-1995) who became an expert in the field of orbital mechanics, helping to determine trajectories during Project Mercury, plan rendezvous techniques during Project Gemini, and develop mission techniques during Project Apollo; in the words of flight director Gene Kranz, Tindall 'was pretty much the architect for all of the techniques that we used to go down to the surface of the Moon.' TLS signed “Howard W. Tindall, Jr.,” one page, 5.75 x 3.25, January 10, 1966. Brief letter commenting on his involvement in Project Gemini, in full: "Working on the Gemini rendezvous is probably going to end up being more fun and more satisfying than anything else I'll ever do." In very fine condition.
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