endangered
Van Devender, R., and R. Rondeau. 1992. The status of Sneed's pincushion cactus (Coryphantha sneedii var. sneedii) in Texas. Southwestern Field Biologists. Tuscon, Arizona. 20 p.
Andre, M. R. 2006. Gila National Forest's threatened and endangered species report for the calendar year of 2005. Permit No. TE841359-2. Gila National Forest, Silver City, NM. 243 p.
Sivinski, R. 2004. Knowlton's Cactus (Pediocactus knowltonii): Progress Report. New Mexico Forestry Division; Santa Fe, New Mexico. 13 p.
Brooks, J. 2006. Pecos River Drainage Fish Collections for the Calander Year 2005. United States Department of the Interior. Fish and Wildlife Service. New Mexico Fishery Resources Office. 23 p.
U.S. Fish and Wildlife Service. 2000. Federally listed as threatened and endangered species of Texas. March 28, 2000. . 59 p.
Lee-Chadde, S. and L.F. Huenneke. 1997. A handbook of rare, threatened and endangered plant species of the Sacramento Mountains. Dept. of Biology, New Mexico State University, Las Cruces, NM 88003. Draft. pp. 109.
Higgins, L.C. 1989. Guadalupe Mountains National Park threatened and endangered and exotic plant surveys. Report prepared for Guadalupe Mountains National Park.
Thompson, B. C. 2006. Collections of Fishes Under Authority of Threatened and Endangered Species Permit No. TE815409-0. State of New Mexico Department of Game and Fish. Director and Secretary to the Commision. 4 p.
McCollum, J.L., and D.R. Ettman. 1987. Georgia's protected plants. Georgia Dept. of Natural Resources, and the U.S. Dept. of Agriculture, Soil Conservation Service, Social Circle, GA. 64 pp.
U.S. Fish and Wildlife Service (USFWS). 1987. Recovery Plan for the Puerto Rican Parrot, Amazona vittata. U.S. Fish and Wild- life Service, Atlanta, Georgia, April 8, 1987. 69 p.