by David M. Jacobs, John E. Mack
by Chris A. Rutkowski
by Dolores Cannon, Ozark Mountain Publishing
by Lynn Picknett, Clive Prince
by Len Kasten
by John A. Keel
by Mack
by Elkins Rueckert & McCarty, James Allen McCarty, Carla Rueckert
by Richard Dolan, Bryce Zabel, Jim Marrs
by Norman Hillmer, Philippe Lagass�
by Jacques Vallee
by Zecharia Sitchin
by Charles F. Stanley