1. C-22 Geologic Atlas of Chisago County, Minnesota [Part A] Datasets University Of Minnesota Public content 2010. Setterholm, Dale R and Minnesota Geological Survey. 6 pls. Scales 1:100,000 and 1:200,000. Pl. 1, data-base map; pl. 2, bedrock geology; pl. 3, surficial geology; pl. 4 Quaternary stratigraphy; pl. 5...