1. Geologic map and structure section of the Logan 30ʹ by 60ʹ quadrangle, Utah and Wyoming [cartographic material] Yale Public content 1985. 2002-06-01T04:00:00Z. 2023-09-29T03:01:24Z. Geological Survey (U.S.). The Survey : [Books and Open-File Reports Section, distributor]. English. cartographic image. Public. Utah and Cache County.