UFO Calendar:

THE YEAR OF THE UFO – 
A SPECIAL CALENDAR OF HISTORICAL HIGHLIGHTS

(National Investigations Committee

on Aerial Phenomena, Washington, D.C.)

(ufodocarchive.org)

The calendar was copyrighted in 1972:

http://www.ufodocarchive.org/nicap/UFO%20Historical%20Calendar.pdf

(nicap.org image)