The Expanding Case for the UFO

From Author Wars - https://authorwars.com/books/the-expanding-case-for-the-ufo-827864.html

Overview:

Title: The Expanding Case for the UFO
Author: M. K. Jessup
Year: 1957
Type: Non-fiction

Editions/Publications:

Unknown. The Expanding Case for the UFO (Unknown, M. K. Jessup, Citadel Press, $3.50, 253 pages, Hardcover, Non-fiction)