Princeton: Van Nostrand, 1960. First Edition. Cloth. Large 8vo. Black quarter cloth over grey cloth. Illustrations and facsimiles of documents. 164 pp.
No dust jacket. Several scratches and scuffs to covers. "Union League Club of Chicago" bookplate inside front cover. Previous owner's info in gutter of front free endpaper. Text clipped from jacket flap pasted inside rear cover. Tight and clean.
This is a scarce book collecting research on UFOs performed by the US Air Force in the 1950s. Very good. Item #1225