On the Frontier. Flight Research at Dryden, SP-4303. Covers the early flight tests of jet aircraft during the 1940's, the X series projects including breaking the sound barrier with the X-1 and into space with the X-15. Includes Dryden's support role in Gemini, Apollo, and the Space Shuttle. 7x10 inches, cloth. NASA/GPO, 1984.
