Letters to the Air Force on UFOs

From Author Wars - https://authorwars.com/books/letters-to-the-air-force-on-ufos-2379013.html

Overview:

Title: Letters to the Air Force on UFOs
Author: Bill Adler
Year: 1967
Type: Non-fiction

Variant Titles:

1969. Das Rätsel der UFOs

Editions/Publications:

Unknown. Letters to the Air Force on UFOs (Unknown, Bill Adler, Dell, $0.50, 157 pages, Paperback, Non-fiction)