Coleman, Ted. Jack Northrop and the Flying Wing: The Real Story Behind the Stealth Bomber. New York: Paragon House, 1988. ISBN 1-55778-079-X.
Donald, David, editor. "Northrop Flying Wings", Encyclopedia of World Aircraft. Etobicoke, Ontario: Prospero Books, 1997. ISBN 1-85605-375-X.
Maloney, Edward T. Northrop Flying Wings. Corona del Mar, California: World War II Publications, 1988. ISBN 0-915464-00-4.
O'Leary, Michael. "Northrop's Flying Sorcery". Aeroplane, Volume 35, Number 6, Issue 410, June 2007. pp. 62–64.
O'Leary, Michael. "The Shape of Wings to Come". Aeroplane, Volume 35, Number 6, Issue 410, June 2007, pp. 65–68.
O'Leary, Michael. "Wings of Northrop, Part Two". Air Classics, Volume 44, Number 1, January 2008, Challenge Publications, Inc. ISSN 0002-2241. (Heavily illustrated, authoritative N-9M article.)
New 'Flying Wing' Plane Hailed as Great Advance In Aviation. "The Baltimore American" newspaper, Section E, ngày 9 tháng 2 năm 1930. (Front-page feature article with two photos reporting on Northrop's flights with his first Flying Wing monoplane.)
Pape, Garry and John Campbell. Northrop Flying Wings: A History of Jack Northrop's Visionary Aircraft. Atglen, Pennsylvania: Schiffer Publishing, Ltd., 1995. ISBN 0-88740-689-0.
Wooldridge, E. T. Winged Wonders: The Story of the Flying Wings. Washington, D.C.: Smithsonian Institution Press, 1983. ISBN 0-87474-966-2.
