1. Paleozoic lithostratigraphic nomenclature for southeastern Minnesota;Austin,1969
2. Bedrock geologic map of the Iron River 1 degree × 2° quadrangle, Michigan and Wisconsin;Cannon,1986
3. The potential for diamond-bearing kimberlite in northern Michigan and Wisconsin: U.S. Geological Survey Geological Circular 842;Cannon,1981
4. Geologic map of the Keweenaw Peninsula and adjacent area, Michigan;Cannon,2001
5. Bedrock geologic map of the Ashland and northern part of the ironwood 30' × 60' quadrangles, Wisconsin and Michigan;Cannon,1996