| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Mountain Bike America: Indiana, 2nd: An Atlas of Indiana's Greatest Off-Road Bicycle Rides | 978-0-7627-0703-4 (0-7627-0703-8) | 2000 |
| The Geocaching Handbook, 2nd: The Guide for Family Friendly, High-Tech Treasure Hunting | 978-0-7627-6383-2 (0-7627-6383-3) | 2011 |
| The Geocaching Handbook | 978-0-7627-3044-5 (0-7627-3044-7) | 2004 |