Echinocereus fendleri var. kuenzleri
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Snyder, W.R.. 1984. Summary of Spring 1984 sensitive plant survey.
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DeLorenzo, D. 1998. Hardin Allotment Trip Report: Kuenzler's hedgehog cactus (Echinocereus fendleri var. kuenzleri). United States Forest Service (USFS), Albuquerque, NM.
Chauvin, Y., A. Swinehart, and J. Ladyman. 1998. Kuenzler's Cactus (Echinocereus fendleri var. kuenzleri) surveys. Unpubl. report by NM Natural Heritage Program submitted to USDA Forest Service. 37 p.
Bleakly, D. 1998. New Locations of rare plants, found by David Bleakly for NM Natural Heritage Program (14 January 1998). . 3 p.
Black, K. Kilday, L. Kastner, T. Shanks, B. (1998) Sensitive Plant Site Report, Population Site Report, Lincoln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 4 p.
Paul, L. (1997) Inventory Completion Report, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name: Kuenzler Survey. Guadalupe Ranger District, Lincoln National Forest, USFS. 3 p.
Paul, L. (1997) Kuenzler Blooming Report and Map. Guadalupe Ranger District, Lincoln National Forest, USFS. 3 p.