map from "Report on the Geological Survey of the State of Wisconsin .....
This image has been taken from scan 000499 from "Report on the Geological Survey of the State of Wisconsin ... James Hall on General Geology and Palæontology, and J. D. Whitney on the Upper Mississippi Lead reg... More
seashells from "Report on the Geological Survey of the State of Wiscon...
This image has been taken from scan 000081 from "Report on the Geological Survey of the State of Wisconsin ... James Hall on General Geology and Palæontology, and J. D. Whitney on the Upper Mississippi Lead reg... More
map from "Report on the Geological Survey of the State of Wisconsin .....
This image has been taken from scan 000501 from "Report on the Geological Survey of the State of Wisconsin ... James Hall on General Geology and Palæontology, and J. D. Whitney on the Upper Mississippi Lead reg... More
map from "Report on the Geological Survey of the State of Wisconsin .....
This image has been taken from scan 000497 from "Report on the Geological Survey of the State of Wisconsin ... James Hall on General Geology and Palæontology, and J. D. Whitney on the Upper Mississippi Lead reg... More
map from "Report on the Geological Survey of the State of Wisconsin .....
This image has been taken from scan 000145 from "Report on the Geological Survey of the State of Wisconsin ... James Hall on General Geology and Palæontology, and J. D. Whitney on the Upper Mississippi Lead reg... More