Lecture Notes on UFO Properties - by Herman Oberth from 1954
For centuries people have seen strange, shining objects in the sky. the oldest reports are found from Plinius and Seneca, according to ...
Lecture Notes on UFO Properties - by Herman Oberth from 1954
Making UFOs make sense: Ufology,science, and the history of their mutual mistrust
Spherical Unidentified Anomalous Phenomena
Analysis of Radar and Air-Visual UFO Observations on 24 October 1968 at Minot AFB, North Dakota, USA
The Condon Report
Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects; Project No. 100073