Selected books and monographs published by CUFOS over the years are available online:
Ted Phillips, comp., Physical Traces Associated with UFO Sightings (July 1975)
Vicente-Juan Ballester Olmos, A Catalogue of 200 Type-I UFO Events in Spain and Portugal (April 1976)
David Webb, 1973: Year of the Humanoids, an Analysis of the Fall 1973 UFO/Humanoid Wave (2nd ed., May 1976)
Proceedings of the 1976 CUFOS Conference, April 30–May 2, 1976, Lincolnwood, Illinois, ed. Nancy Dornbos (1976)
[Part 1, pp. 1–132], [Part 2, pp. 133–322]
Isabel Davis and Ted Bloecher, Close Encounter at Kelly and Others of 1955 (1978)
Jennie Zeidman, A Helicopter-UFO Encounter over Ohio (March 1979)
Mark Rodeghier, UFO Reports Involving Vehicle Interference: A Catalogue and Data Analysis (October 1981)
The Spectrum of UFO Research, ed. Mimi Hynek. Proceedings of the Second CUFOS Conference held September 25–27, 1981, in Chicago, Illinois (1988)
Greg Long, Examining the Earthlight Theory: The Yakima UFO Microcosm (1990)
The Roswell Report: A Historical Perspective, ed. George M. Eberhart (July 1991)
The Plains of San Agustin Controversy, July 1947: Gerald Anderson, Barney Barnett, and the Archaeologists. A summary report of the Plains of San Agustin Conference (Crash III) sponsored by the Center for UFO Studies and the Fund for UFO Research, February 15–16, 1992, in Chicago, Illinois (June 1992)