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