Extent of Lake Agassiz
Source: Upham, Warren. “The Glacial Lake Agassiz”. Plate III. Monographs of the en:United States Geological Survey: Volume XXV. Washington Government Printing Office: Washington, 1895.
14.5_Agassiz
Extent of Lake Agassiz
Source: Upham, Warren. “The Glacial Lake Agassiz”. Plate III. Monographs of the en:United States Geological Survey: Volume XXV. Washington Government Printing Office: Washington, 1895.