Access to the full image is restricted.
- 35mm slide: 9537
- World Region
- North America
- Great Lakes Region
- United States
- Glacial retreat post Port Huron, ca. 10200 B.C.
- Image Categories
- Map: Geographic/natural features
- Source Type Detail
- Book Citation: "The Prehistoric Great Lakes of North America," by Jack L. Hough; p. 97. In American Scientist, Vol. 51, No. 1. New Haven, CO: Sigma Xi, 1963.
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