43 books • 4 series
The Bigfoot Files
Antarctica and the Secret Space Program
Obelisks
Bigfoot Nation
The Anti-Gravity Files
The Lost World of Cham
Ark of God
Vimana
A Hitchhiker's Guide to Armageddon
Yeti, Sasquatch & Hairy Giants
The Enigma of Cranial Deformation
Ancient Technology in Peru and Bolivia
More Far-out Advantures
Anti-Gravity and the World Grid
Los Templarios Y El Secreto de Cristobal Colon
Yetis, Sasquatch & Hairy Giants
Lost Cities & Ancient Mysteries of the Southwest (Lost Cities)
El Enigma de Los Olmecas Y Las Calaveras de Cristal (Historia Incognita)
The Crystal Skulls
The Mystery of the Olmecs
Man-Made Ufos
El Secreto de Cristobal Colon (Historia Incognita)
Pirates and the Lost Templar Fleet
Atlantis and the Power System of the Gods
