American X-Vehicles, An Inventory from X-1 to X-50 - NACA, NASA, Air Force Experimental Airplanes and Spacecraft (NASA SP-2003-4531)

By Progressive Management.
Price: $8.99 USD.
Category: <a href="http://www.smashwords.com/books/category/4">Nonfiction</a> / <a href="http://www.smashwords.com/books/category/70">Science and Nature</a> / <a href="http://www.smashwords.com/books/category/4733">Space Science</a> / <a href="http://www.smashwords.com/books/category/4">Nonfiction</a> / <a href="http://www.smashwords.com/books/category/84">History</a> / <a href="http://www.smashwords.com/books/category/491">Military</a> / <a href="http://www.smashwords.com/books/category/2731">Military / Aviation</a>.
Progressive Management This official NASA history document - converted for accurate flowing-text e-book format reproduction - is a comprehensive survey of America's experimental aircraft from the pathfinding supersonic X-1 to the X-50.