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1. Field trip guidebook for the glacial geology of the Laurentide divide area, St Louis and Lake Counties, Minnesota, GB-18, Plate 1

1992. Lehr, J.D. and Hobbs, Howard C. Front, Glacial Geomorphology (landforms) of the Laurentian Divide Area, St. Louis and Lake Counties, Minnesota, scale 1:250,000.

2. Field trip guidebook for the glacial geology of the Laurentide divide area, St Louis and Lake Counties, Minnesota, GB-18, Plate 2

1992. Lehr, J.D. and Hobbs, Howard C. Back, Glacial Geomorphology (landforms) of the Laurentian Divide Area, St. Louis and Lake Counties, Minnesota, scale 1:250,000.