Allen, Richard Sanders. The Northrop Story: 1929-1939. New York: Orion, 1990. Used copies may be available at Amazon
Anderson, Fred. Northrop: An Aeronautical History. Los Angeles: Northrop, 1976.
Ashkenas, Irving. Letter, 17 July 1997. AFFTC/HO.
-----. Telephone interview, 20 Nov. 1997.
Associated Press. "Crash of Giant Flying Wing Kills 5 Crewmen." 6 June 1948. AFFTC/HO.
Baker, Francis. "The Death of the Flying Wing: The Real Reasons Behind the 1949 Cancellation of Northrop Aircraft's RB-49." Claremont, Calif.: Claremont Graduate School, 1984. AFFTC/HO.
Biddle, Wayne. Barons of the Sky. New York: Simon & Schuster, 1991. Excellent book, good mini-bio of Jack Northrop, but only tangentially about the Flying Wing.
Bowers, Al. Email, 25 June 1997. AFFTC/HO.
Bretcher, Fred. "Moments of Thrill Time." Northrop News, 25 Feb 1983.
Brown, Eric. Wings of the Weird and Wonderful. Blue Ridge Summit, Pa.: Tab Books, 1987.
Bullard, Douglas. The Nurflugel Page all-wing files.
Cardenas, Robert. Account written for his family, 19 May 1990.
-----. "More Facts on the YB-49." In Chilstrom & Leary, below.
-----. Telephone interviews, 21 July 1996, 29 Aug. 1997. Notes at AFFTC/HO and on Ford website.
Chilstrom, Kenneth. Remarks, 50th reunion of Flight Test School
-----. Telephone interview, 15 July 1997.
Chilstrom, Kenneth, & Penn Leary, eds. Test Flying at Old Wright Field. Omaha: Westchester House, 1995. Nice collection of ancedotal accounts, mostly by the pilots themselves.
Coleman, Ted. Jack Northrop and the Flying Wing: The Story Behind the Stealth Bomber. New York: Paragon, 1988. This is where the conspiracy theory really got started.
Craven, Wesley, & James Cate. The Army Air Forces in World War II. vol. 2, Europe: Torch to Pointblank. University of Chicago Press, 1949.
Edwards, Glen. Diaries, 1941-48. AFFTC/HO.
-----. Pilot's report on the N-9M, 3 May 1946. AFFTC/HO.
-----. Letter to "Test Pilots," 5 June 1948. AFFTC/HO.
Edwards, Patricia. "Touched With Fire." AFFTC/HO.
Foa, Joseph. Letter. Defense Science. March 1990.
Ford, Daniel. "B-36: Bomber at the Crossroads." Air & Space.
-----. "The Edwards Diaries." Air & Space. July 1997.
Gepfert, Ken. "Northrop Claims AF Scuttled 'Flying Wing'." Los Angeles Times. 8 Dec 1980.
Test Pilots: The Frontiersmen of Flight.
Washington: Smithsonian Institution Press, 1981.
-----. Strike From the Sky: The History of Battlefield Air Attack. Washington: Smithsonian Institution Press, 1989.
-----. "Before the B-2." Air Power History. Winter 1994.
Hamlin, Benson. Flight Testing Conventional and Jet-Propelled Airplanes. New York: Macmillan, 1946.
Hansen, Chuck. U.S. Nuclear Weapons: The Secret History. New York: Orion, 1988.
Heppenheimer, T. A. "The Dream of the Flying Wing." Invention & Technology. Winter 1994.
Honey, John. "The Wing Will Fly." Documentary broadcast on Discovery channel, 1991. Videotape at AFFTC/HO.
Horner, Richard Horner. "Development and Crash of the YB-49." In Chilstrom & Leary, above.
Knaack, Marcelle. Encyclopedia of US Air Force Aircraft & Missile Systems. vol 2, Post-WWII Bombers. Washington: Office of Air Force History, 1978.
Kohn, Leo. The Flying Wings of Northrop. Milwaukee: Aviation Publications, 1974.
Krauss, Serge. Nurflugel Tailless Aircraft Bibliography. Self-published, 335 pp., 1998. Email the author at skrauss AT earthlink.net or write Serge Krauss, 3114 Edgehill Rd, Cleveland Heights OH 44118.
Krieger, Stuart. Letter, 14 July 1997. AFFTC/HO.
McLarren, Robert. "Low Drag Accented in All-Wing." Aviation Week. 20 Dec. 1948.
Myhra, David. The Horten Brothers and Their All-Wing Aircraft. Atglen PA: Schiffer, 1998.
Nickel, Karl. "On the Importance of the Correct C.G. Location on Flying
Wings." National Soaring Museum, Elmira, N.Y., 17 July 1997.
AFFTC/HO and at Bullard's website.
-----. Letter to the author, 5 Aug. 1997. AFFTC/HO.
Nickel, Karl, & Michael Wohlfahrt. Tailless Aircraft in Theory and Practice. Washington: AIAA, 1995.
Northrop Aircraft, Inc. Accident report on the N-9M. AFFTC/HO.
-----. Accident report on the YB-49. AN-700065-03, NASM Archives.
-----. "The Story of Jack Northrop and the Flying Wing." AN-700010-03, NASM Archives.
-----. June 1948 memo and YB-49 program history. AN-700060-16, NASM Archives.
Northrop, John. "The All-Wing Type Aircraft." Aviation. 29
____. "The Northrop XB-35 Flying Wing Superbomber." Aviation. Aug. 1946.
____. "The Development of All-Wing Aircraft." Royal Aeronautical Society Journal. 1947.
Pape, Garry, with John Campbell. Northrop Flying Wings: A History of Jack Northrop's Visionary Aircraft. Atglen, Pa.: Schiffer, 1995.
Perkins, Courtland. "Recollections." Ch. 5 of an incomplete manuscript. AFFTC/HO.
Planes of Fame. N-9M seminar and demonstration, 2 Nov. 1996.
Roberts, Clete. Interview with Jack Northrop. Broadcast on KCET, Los Angeles, 1980. Videotape at AFFTC/HO.
Sears, William. Stories from a 20th-Century Life. Stanford, Calif.: Parabolic, 1994.
Stanley, Max. Telephone interview, 10 Aug. 1996.
Stoliker, Fred, et al. Flight Testing at Edwards. Lancaster, Calif.: Flight Test Historical Foundation, 1996.
Tucker, Charles. Telephone interview, 5 Sept. 1997. Notes at AFFTC/HO and this website.
U.S. Air Force. Accident report on the YB-49. AN-700065-03, NASM
-----. XB-35 case history. AFFTC/HO.
-----. YB-49 case history. AFFTC/HO; AN-700065-17, NASM Archives.
Von Karman, Theodore, with Lee Edson. The Wind and Beyond: Theodore von Karman. Boston: Little Brown, 1967.
Weldon, Thomas. "Glen W. Edwards." NATO-AGARD Highlights. July 1995. Preliminary and published versions at AFFTC/HO.
Wooldridge, E. T. Winged Wonders: The Story of the Flying Wings. Washington: Smithsonian Institution Press, 1983.
Young, James. Ad Inexplorata: A Photo History of Edwards AFB. No publishing data. AFFTC/HO.