- E-bookA Natural History of AmphibiansRobert C. Stebbins
- E-bookReptiles and Amphibians of the San Francisco Bay RegionRobert C. Stebbins
- E-bookCalifornia Amphibians and ReptilesRobert C. Stebbins
- E-bookThe Lives of Desert Animals in Joshua Tree National MonumentAlden H. Miller
- E-bookSéries: California Natural History GuidesSam Hinton