- The Grand Canyon Handbook: An Insider's Guide to the Park: As Related by Ranger Jack
- The Ranger's Guide to Yellowstone: Insider advice from Ranger Norm
- The Yosemite Handbook: An Insider's Guide to the Park: As Related by Bruinhilda
- The Yellowstone Handbook: An Insider's Guide to the Park: A Related by Ranger Norm
- The Ranger's Guide to Yosemite: Insider Advice from Ranger Dick