BioStor
 | Notes on a collection of reptiles from Southern California and Arizona John Van Denburgh (1912) Proceedings of the California Academy of Sciences 3: 147-154 |
 | A list of the amphibians and reptiles of Arizona, with notes on the species in the collection of the Academy John Van Denburgh and Joseph R Slevin (1913) Proceedings of the California Academy of Sciences 3: 391-454 |
 | Life-zone indicators in California Harvey Monroe Hall and Joseph Grinnell (1919) Proceedings of the California Academy of Sciences 9: 37-67 |
 | List of the amphibians and reptiles of the peninsula of lower California, with notes on the species in the collection of the academy J Van Denburgh and J R Slevin (1921) Proceedings of the California Academy of Sciences 11: 49-72 |
 | An annotated checklist and key to the snakes of Mexico H M Smith and E H Taylor (1945) US Natl. Mus. Bull. 187: 1-239 |
 | Taxonomy and distribution of the horned lizard genus Phrynosoma W L Reeve (1952) University of Kansas Science Bulletin 34: 817-960 |