Franklin, Richardson, Columbian, Washington, and Townsend ground squirrels.

Askham, L.R. 1994. Franklin, Richardson, Columbian, Washington, and Townsend ground squirrels. Pages B159-B163. In: S.E. Hygnstrom, R.M. Timm and G.E. Larson (editors). Prevention and Control of Wildlife Damage. University of Nebraska Cooperative Extension Service, Lincoln, NE.