Hansen 1995, p. 106. Hansen, Chuck (1995). Volume V: US Nuclear Weapons Histories. Swords of Armageddon: US Nuclear Weapons Development since 1945. Sunnyvale, California: Chukelea Publications. ISBN978-0-9791915-0-3. OCLC231585284.
Campbell 2005, pp. 76–77. Campbell, Richard H. (2005). The Silverplate Bombers: A History and Registry of the Enola Gay and Other B-29s Configured to Carry Atomic Bombs. Jefferson, North Carolina: McFarland & Company. ISBN0-7864-2139-8. OCLC58554961.
Hansen 1995, pp. 107, 119. Hansen, Chuck (1995). Volume V: US Nuclear Weapons Histories. Swords of Armageddon: US Nuclear Weapons Development since 1945. Sunnyvale, California: Chukelea Publications. ISBN978-0-9791915-0-3. OCLC231585284.
Hoddeson et al. 1993, pp. 240–244. Hoddeson, Lillian; Henriksen, Paul W.; Meade, Roger A.; Westfall, Catherine L. (1993). Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945. New York: Cambridge University Press. ISBN0-521-44132-3. OCLC26764320.