1. Preliminary geologic map and sections of the area between Hamlin Valley and Escalante Desert, Iron County, Utah [cartographic material] Yale Public content 1984. 2023-08-14T16:45:35Z. 2023-08-15T03:01:49Z. Best, Myron G. U.S. Geological Survey. English. cartographic image. Public. Utah, Iron County, and Iron County.