Whatever exploded over the Tunguska region of Siberia in 1908, it happened during June, a month also notable for the famous Father Gill UFO experience in New Guinea and a UFO sighting by military personnel in Vietnam. Note, too, that UFO occupant cases continued to grasp the attention of investigators, and during the mid-sixties mysterious power failures in association with UFOs became common.
(For this month, too, the image has been darkened a bit to enhance a minor amount of faded ink.)
