“Unidentified Flying Objects” by Dr. Jacques F. Vallee,
April 1973
(Bulletin of the Atomic Scientists, Chicago, Illinois)
Dr. Jacques F. Vallee reviews Dr. J. Allen Hynek’s book, “The UFO Experience”:
http://books.google.com/books?id=IgwAAAAAMBAJ&pg=PA49&dq=ufo&hl=en&ei=QnFPTZyYOcSEOozSyPgP&sa=X&oi=book_result&ct=result&resnum=7&ved=0CEoQ6AEwBg#v=onepage&q&f=false
The book was published by Henry Regnery Co., Chicago in 1972.
Dr. J. Allen Hynek (left) and Dr. Jacques F. Vallee
(wikimedia.org photo)