SPA238 Captain Donald Edward Williams signed cover. (United States Navy, Retired) (born 13 February 1942) is a former NASA astronaut. He has logged a total of 287 hours and 35 minutes in space. pilot on STS-51D in 1985, and was the spacecraft commander on STS-34 in 1989.Signed on 1980 Shuttle Landing Tests cover, with Grumman Gulfstream II shuttle training aircraft illustrated. White Sands Missile Range postmark.