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1. Aggregate resources inventory, Twin Cities Metropolitan Area, Minnesota, IC-20, Plate 1

1984. Meyer, Gary N. and Jirsa, Mark A. Sand and gravel aggregate resources, geologic map units, seven county metropolitan area, Minnesota, scale 1:250,000.

2. Aggregate resources inventory, Twin Cities Metropolitan Area, Minnesota, IC-20, Plate 2

1984. Meyer, Gary N. and Jirsa, Mark A. Bedrock (crushed rock) aggregate resources, geologic map units, seven county metropolitan area, Minnesota, scale 1:250,000.

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.