1. Geologic map of the Mount Harvard quadrangle, Chaffee and Gunnison Counties, Colorado [cartographic material] Yale Public content 1972. 2012-03-16T15:11:22Z. 2012-03-27T23:59:42Z. Brock, M. R. (Maurice Rex), 1922-. The Survey. English. Public. Colorado, Chaffee County, and Gunnison County.