1. Geologic map and physical properties of the surficial and bedrock units of the Englewood quadrangle, Denver, Arapahoe, and Adams Counties, Colorado [cartographic material] Yale Public content 1980. 2012-06-25T15:02:42Z. 2012-07-05T13:02:55Z. Shroba, R. R. The Survey. English. Public. Colorado, Denver, Arapahoe County, and Adams County.