| Item Description: | Includes seven 8 x 10 inch photoprints in folder at rear.
The X-15 was the world's first operational space plane in the early 1960s. Three X-15s were built, flying 199 test flights, the last on 24 October 1968. The first X-15 flight was an unpowered glide flight by Scott Crossfield, on 8 June 1959. Crossfield also piloted the first powered flight on 17 September 1959, and his first flight with the XLR-99 rocket engine on 15 November 1960. Twelve test pilots flew the X-15. Among these were Neil Armstrong, later a NASA astronaut and first man to set foot on the Moon, and Joe Engle, later a commander of NASA Space Shuttle missions. |
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