Inside The SaucersTimothy Green Beckley, Allen Greenfield, Jerome Clark, Gene Steinberg, Rick Hilberg, David Halperin, Edward J. Babcock, Brad Steiger, Kenneth L. Larson, George D. Fawcett · First published 2017Open the Tome
Chasing the Flying SaucersGray Barker, Andrew Colvin, David Halperin, Rick Hilberg · First published 2015Open the Tome
