1. Geologic map of the Squaw Pass quadrangle, Clear Creek, Jefferson, and Gilpin counties, Colorado [cartographic material] Yale Public content 1976. 2012-05-23T19:40:22Z. 2012-06-07T16:55:00Z. Sheridan, Douglas M., 1921-. The Survey. English. Public. Colorado, Clear Creek County, Jefferson County, and Gilpin County.