Skylab's Long-Haired Messenger: The Visitation of Comet Kohoutek - AmericaSpace
The Comet, the Typist, and the Psychotronic Think Tank: A Tale of the New Age | Mediated Signals
Operation Kohoutek: Comet Kohoutek. Papers from a workshop, Huntsville, Ala., June 1974. Gilmer Allen Gary, Ed. National Aeronautics and Space Administration, Washington, D.C., 1975 (available from the Superintendent of Documents, Washington, D.C.).