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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Escobaria sneedii
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.
Castetter, E. F., P. Pierce, and K. H. Schwerin. 1975. A reassessment of the Genus Escobaria. Cactus and Succulent Journal. Vol XLVII. 60-70 pp.
Zimmerman, D. A. 1972. A new species of Coryphantha from New Mexico. Cactus and Succulent Journal. Volume XLIV. 114-117 pp.
Champie, C. 1960. Escobaria sneedii further described. Cactus and Succulent J. 32: 138-140.
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.
Unknown (1990). Map for Survey for Hedeoma apiculatum, Aster laevis, Corypantha sneeedii. Guadalupe RD, Lincoln NF, USFS.
Birnbaum, S. J. 2001. Sneed's pincushion cactus (Escobaria sneedii var. sneedii) localities in New Mexico. Texas Parks and Wildlife. Austin, Texas. 2 pages.
Zimmerman, A. D., and B. D. Parfitt. 2006. Flora of North America. Volume 4. Pages 236-237.