The B-36G was the designation initially applied to a swept-wing,
jet-powered version of the B-36F. Two B-36Fs (49-2676 and 49-2684)
were ordered as B-36Gs, but the designation was changed to YB-60
before they were built.
United States Military Aircraft Since 1909, Gordon Sqanborough and Peter
M. Bowers, Smithsonian, 1989.
Post-World War II Bombers, Marcelle Size Knaack, Office of Air Force
General Dynamics Aircraft and their Predecessors, John Wegg,
Naval Institute Press, 1990.
American Combat Planes, Third Enlarged Edition, Ray Wagner, Doubleday,
Convair B-36: A Comprehensive History of America's "Big Stick", Meyers K. Jacobsen, Schiffer Military History, 1997.