The North American XB-70 Valkyrie is one of the most unusual looking
aircraft in aviation history, and only two were constructed. It was
originally designed as a Mach 3 high-altitude bomber, but was later used
as a research aircraft. This new book by John Cambell is an all-color
photo study of the XB-70, including production, flight tests, and the
fatal crash of Aircraft #2. Aircraft #1 is now at the U.S. Air Force
Museum at Wright-Patterson AFB.