1. World map showing surface and subsurface distribution and lithologic character of Middle and Late Neoproterozoic rocks Author/Creator: Stewart, J. H., 1928-2013 Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2007 Resource Type: Map Access & Availability: Loading
2. Geology and tectonic significance of early Proterozoic rocks in the Monico area, northern Wisconsin Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : Information Services [distributor] Resource Type: Map Access & Availability: Loading
3. Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin Author/Creator: Cannon, William F. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2000] Resource Type: Map Access & Availability: Loading