What happened to Northrop Air Force wing?

After only 13 flights, testing ended abruptly on 26 April 1951. It was then flown back to Northrop's headquarters from Edwards Air Force Base (formerly Muroc AAF) on what would be its last flight. There, this remaining flying wing sat abandoned at the edge of Northrop's Ontario airport for more than two years.

Where can I find a book about Northrop flying wings?

Knaack, Marcelle Size. Post-World War II Bombers, 1945–1973. Washington, D.C.: Office of Air Force History, 1988. ISBN 0-16-002260-6. Maloney, Edward T. Northrop Flying Wings, Corona del Mar, California: World War II Publications, 1988. ISBN 0-915464-00-4. O'Leary, Michael. "Wings of Northrop, Part Three."

Why did Jack Northrop make a flying wing?

In the 1940s, Jack Northrop generated great excitement with his amazing “Flying Wing,” which flew like an airplane but didn’t look like one, at least not in the traditional sense. It demonstrated that an aircraft did not need a tail or a fuselage to fly. The wing was enough.