“The U.S. Air Force and Ufology: Chapter on UFOs from Air Force Textbook on ‘Introductory Space Science’ ” (UFO Evidence.org)

‘Introductory Space Science - Volume II’ is edited by U.S. Air Force Major Donald G. Carpenter:

http://www.ufoevidence.org/documents/doc1532.htm

The Air Force Academy pulled this volume from the curriculum in the early 70s, because of the controversy it generated, according to UFO Evidence.org.

(wikimedia.org image)