Vallee, Jacques. Confrontations: A Scientist's Search for Alien Contact. Paperback.

Vallee, Jacques. Confrontations: A Scientist's Search for Alien Contact. Paperback., Volume: Burroughs 352. William S. Burroughs entertainment reading collection, Burroughs. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/579573 Accessed December 26, 2025.