| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Best Tracks on Guam | 978-0-9713668-4-8 (0-9713668-4-5) | 2000 | |
| The Best Tracks on Guam: A Guide to the Hiking Trails | 978-0-9713668-6-2 (0-9713668-6-1) | 2004 | Bev Lotz |
| The Guam Guide: What to See and Do on the Island | 978-0-9713668-5-5 (0-9713668-5-3) | 2001 | Jonathan Lotz |