1981
Worthington, R. D. 1981. Locations of two populations of Sneed's cactus in the Anthony Gap area. University of Texas. Department of Biological Sciences. El Paso, Texas 79968. 6 pages.
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Sneed's pincushion cactus
Worthington, R. D. 1981. Locations of two populations of Sneed's cactus in the Anthony Gap area. University of Texas. Department of Biological Sciences. El Paso, Texas 79968. 6 pages.
Tonne, P. 2001. Status Report for Sneed's Pincushion Cactus (Escobaria sneedii var. sneedii; Cactaceae). Report for U.S. Fish and Wildlfie Service. Albuquerque, NM. 16 p.
Sivinski, R. 1991. Annual Section 6 performance report monitoring endangered plants (job 1). Unpublished report for U.S. Fish and Wildlife Service, Albuquerque, NM. 135 p + maps.
Birnbaum, S. J. 2001. Sneed's pincushion cactus (Escobaria sneedii var. sneedii) localities in New Mexico. Texas Parks and Wildlife. Austin, Texas. 2 pages.
Howard, M. 2011. BLM Special Status Plants Data. Plant Conservation Program, Bureau of Land Management, New Mexico State Office.