Echinocereus fendleri var. kuenzleri
Fletcher, Reggie. 1985. Recovery Strategy for Echinocereus fendleri var. kuezleri. Unites States Forest Service (USFS) Regional Office, Albuquerque, NM. pp15.
Woltering, F. 1980. Threatened and Endangered Species Habitat and Study Area Notes for Echinocereus fedleri var Kuenzleri. United States Department of Agriculture (USDA) - Forest Service, Albuquerque, NM. p 3.
Woltering, Lou. 1979. Kuenzleri Sighting Handwritten Note. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p.1.
Baker, M. 2007. Defining populations of the Kuenzler's hedgehog cactus (Echinocereus fendleri var. kuenzleri). A multivariate study of morpological characters. Prescott College. Prescott, AZ. 30 pages.
Baker, M. 2007. Surveys for the Kuenzler's hedgehog cactus (Echinocereus fendleri var. kuenzleri) within the Jicarilla and Tucson Mountain areas of the Lincoln National Forest, New Mexico. Prescott College. Prescott, AZ. 15 pages.
Fragua, S. R. (2006) Inventory Completion Report, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name? Echinocereus fendleri var. kuenzleri. Guadalupe Ranger District, Lincoln National Forest, USFS. 4 p.
Unknown (2005) FY 2005 Kuenzleri Cactus Survey, Prude Ranch Area, and Accompanying Maps. Retrieved from Guadalupe Ranger District, Lincoln National Forest, USFS. 10 p.
Fragau, S. (2003) Inventory Completion Report, Sensitve Plant Survey, Lincoln National Forest, Field Notes. Project Name: Echinocereus var. fendleri kuenzleri. Guadalupe Ranger District, Lincoln National Forest, USFS. 4 p.
Fragua, S.R. (2003) Inventory Completion Report, Sensitive Plant Survey, Lincoln Natonal Forest, Field Notes. Project Name: Echinocereus var. fendleri kuenzleri. Guadalupe Ranger District, Lincoln National Forest, USFS. 8 p.
Fragua, S. (2003) Multiple Bundled Sensitive Plant Site Reports, Population Site Report, Lincoln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 24 p.