1. Major General K.F. Cramer, quoted in James Meikle Eglin, Air Defense in the Nuclear Age: The Post-War Development of American and Soviet Strategic Defense Systems (New York: Garland Publishing, 1988), p. 54.
2. Jeffrey A. Engel, “The Surly Bonds: American Cold War Constraints on British Aviation,” Enterprise & Society: The International Journal of Business History (March 2005, vol. 6 no. 1): 1–44.
3. Robert J. Watson, History of the Joint Chiefs of Staff: The Joint Chiefs and National Policy, Vol. V, 1953–1954 (Washington: Historical Division, Joint Chiefs of Staff, 1986), pp. 112–115.
4. Richard M. Leighton, Strategy, Money, and the New Look, 1953–1956: History of the Office of the Secretary of Defense, Vol. III (Washington: Office of the Secretary of Defense, 2001), pp. 116–117; Watson, pp. 118–119.
5. Larry Davis and Dave Menard, F-89 Scorpion in Action (Carrollton, TX: Squadron/Signal Publications, 1990), p. 18; McMullen, Air Defense Weapons, p. 157.