1. Reconnaissance geologic map of the Churchill Mountain quadrangle, Stevens County, Washington [cartographic material] Yale Public content 1981. 2023-01-10T19:27:08Z. 2023-01-11T04:01:45Z. Fox, Kenneth F., cartographer. U.S. Geological Survey. English. cartographic image. Public. Washington (State), Stevens County, Churchill Mountain Region (Wash.), and Stevens County.