Escobaria sneedii var. leei
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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.
Ladyman, J.A.R., Y. Chauvin, and L. DeLay. 1998. Survey for Lee's pincushion cactus (Escobaria sneedii var. leei). Unpubl. report by New Mexico Natural Heritage Program for Bureau of Land Management, Carlsbad Field Office. 8 p. + maps.
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