| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Monsters and Mysteries | 978-0-900850-87-5 | 1972 | |
| Mysteries of Ancient South America | 978-0-932813-26-8 | 2000 | |
| Secret Cities of Old South America | 978-1-60520-321-8 | 2008 | |
| Secret Cities of Old South America | 978-0-932813-55-8 | 1998 | |
| The American Goliah - And Other Fantastic Reports Of Unknown Giants And Humongou Creatures! | 978-1-60611-081-2 | 2011 | Timothy Green Beckley · scott corrales · Nick Redfern |
H.T. · H.W. · Harold W · Harold Wilkins · T W
Adventures Unlimited Press · Cosimo Classics · E.J.P. Publications · Inner Light - Global Communications