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1. Bedrock geologic and topographic maps of the seven-county Twin Cities Metropolitan Area, Minnesota, M-55, Plate 1

1986. Jirsa, Mark A., Olsen, Bruce M., and Bloomgren, Bruce A. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Twin Cities, seven-county metrop...

2. Bedrock geologic and topographic maps of the seven-county Twin Cities Metropolitan Area, Minnesota, M-55, Plate 2

1986. Jirsa, Mark A., Olsen, Bruce M., and Bloomgren, Bruce A. Bedrock topopgrapy (elevation of the bedrock surface) of the Twin Cities, seven-county metropolitan area, scale 1:125,000.

3. Geologic atlas of Winona County, Minnesota, C-2, Plate 8, Geologic Resources

1984. Balaban, N.H., Olsen, Bruce M., Jirsa, Mark A., and Meyer, Gary N. Maps showing locations and types of bedrock aggregate and sand and gravel resources, scale 1:200,000, Winona County.