[[XI-10]] Air Force Files.
[[XI-11]] Boston Globe, November 24, 1960.
[[XI-12]] Barker, G. “Chasing the Flying Saucers,” Flying Saucers (September 1961), p. 33.
[[XI-13]] Palmer, R. “NICAP: National Non-investigations Committee On Aerial Phenomena,” Flying Saucers (September 1961), p. 4.
[[XI-14]] Palmer, R. Editorial, Flying Saucers (March 1962), p. 2.
[[XI-15]] UFO Investigator (July-August 1961).
[[XI-16]] Keyhoe, D. E. The Flying Saucer Conspiracy. New York: Henry Holt & Co., 1955.
[[XI-16a]] “There’s Intelligent Life on the Moon!” Flying Saucers (May 1959), p. 73.
[[XI-17]] UFO Critical Bulletin (January-February 1958).
[[XI-18]] UFO Critical Bulletin (July-August 1957).