The reptiles of western North America, an account of the species known to inhabit California and Oregon, Washington, Idaho, Utah, Nevada, Arizona, British Columbia, Sonora and Lower California - Van Denburgh, John, 1872 -1924 (California Academy of Sciences, 1922)

Response of golden-cheeked warblers (Dendroica chrysoparia) to wildfires at Fort Hood, Texas - Texas Ornithological Society. (Texas Ornithological Society, 2007)

Restoration of ecosystem health in southwestern forests : comprehensive report - United States. Bureau of Land Management. (Northern Arizona University, College of Ecosystem Science and Management, Ecological Restoration Institute, 2000)

Results of the Puritan-American Museum Expedition to Western Mexico. 4, The scorpions - Gertsch, Willis John, 1906 - (American Museum of Natural History, 1958)

Retail price list of rare cacti and succulents - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Mrs.] Wright M. Pierce, 1938)