U.S. 3 Covers of Flights of the X-15 Supersonic
Aircraft, Edwards Air Force Bace
2 Covers of Major Robert M White, 1 Cover
of Neil Armstrong.   Major White was the first
pilot to fly Mach 6 and Neil Armstrong the 1st 
on the mood.   Early 1960 and 1961 flights
Good condition.   Shipped Priority.................