Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains

Henry Sheldon Fitch (December 25, 1909 – September 8, 2009) was an American herpetologist. From 1938 to 1947, he worked for the U.S. Fish and Wildlife Service (USFWS) as a field biologist in the department of pest control, studying rodents such as squirrels, gophers, and kangaroo rats.