1. C-34 Geologic Atlas of Winona County, Minnesota Datasets University Of Minnesota Public content 2014. Setterholm, Dale, R and Minnesota Geological Survey. Plate 1, Data Base, Plate 2, Bedrock geology, Plate 3, Surficial geology, Plate 4 Bedrock topography and Depth-to-bedrock, Scale 1:100,000. Plates ...