Hitler

USAF Air Materiel Command initial report for Project SIGN, dated April 23, 1948. It summarizes early 'Flying Disc' sightings from 1947-1948 and includes a detailed tabulation of 100 incidents, analyzing characteristics like shape, speed, and location.

A 1949 Department of the Army file from the Plans & Operations Division (P&O) concerning an 'Evaluation Study of Phenomenon (Flying Saucers)'. The file contains memos, routing slips, and a radio news digest discussing Walter Winchell's broadcast on the topic.