1995. Runkel, Anthony C. Description of bedrock geology of the eastern half of Houston County, Minnesota, Plate 1 Bedrock geology map, Plate 2 Bedrock topography map. Super...
1993. Morey, G.B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:3,000,000.
1987. Mossler, John H. Paleozoic (age of rocks) rock type and stratigraphy nomenclature (formalized descriptions and terminology) for Minnesota.