Norton. This fascinating book presents the history of VSTOL (Vertical or Short Take-off and Landing) aircraft, a technology in which the U.S. Department of Defense spent more than $1 billion (in today's dollars) from the end of World War II to 1960. You'll see information on many of the types designed and get a full development and flight testing history of the early 1960s' XC-142A test bed, a program that provided volumes of data for the development of today's V-22 Osprey. 146 pages, 195 B&W photographs, engineering drawings and illustrations, data tables and more. 8½"x 11", softcover.