Attributes / relations provided by
♦ ¹Tamias townsendii, Dallas A. Sutton, MAMMALIAN SPECIES No. 435, pp. 1-6 (1993)
♦ ²An Ecological Survey of Endemic MOUNTAIN BEAVERS (Aplodontia rufa) in California, 1979-83, Dale T. Steele', State of California, THE RESOURCES AGENCY, Department of Fish and Game