Wisconsin State Historical Society
Pikes Peak State Park - Iowa
Wyalusing State Park - Wisconsin
Upper Mississippi Fish & Wildlife Refuge
Ft. Crawford Medical Museum National Historic Landmark - Wisconsin
Clayton County - Iowa
Did You Know?
In 1880, Alfred J. Hill and Theodore H. Lewis formed the Northwestern Archeological Survey for the purpose of surveying mounds in the Upper Mississippi Valley. Lewis spent eleven field seasons in Iowa and was the first to map mounds in the present Effigy Mounds National Monument.