Miller, G. S., Jr., and R. Kellogg
1955. List of North American Recent mammals. Bull. U.S. Nat. Mus., 205: xii + 1-954.
Over, W. H., and E. P. Churchill
1945. Mammals of South Dakota. Univ. South Dakota Mus., 56 pp. (mimeographed).
Pfeifer, W. K., and E. A. Hibbard
1970. A recent record of the swift fox (Vulpes velox) in North Dakota. Jour. Mamm., 51:835.
Swenk, M. H.
1941. A study of subspecific variation in the Richardson pocket gopher (Thomomys talpoides) in Nebraska, with description of two new subspecies. Missouri Valley Fauna, 4:1-8.
Visher, S. S.
1914. Report on the biology of Harding County, northwestern South Dakota. Bull. South Dakota Geol. Surv., 6:1-103.