University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/PassPigeon/... ·...
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University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/PassPigeon/... · Mississippi River 2 km north of Onalaska, Wis.; Myrick Marsh, located within the city of