UFO Book:
“Flying Saucers From Outer Space” 
by Donald E. Keyhoe
(NICAP.org) 

The book was published by Henry Holt and Company, Inc.
(New York City) in 1953:

http://www.nicap.org/books/fsos/fsos_complete.htm

The late Major Donald Edward Keyhoe, U.S. Marine Corps,

NICAP Director, UFO Author & Researcher
(youtube.com image)

(nicap.org image)