1961 Map of Dubuque

About this map

The Mississippi River valley anchors this mid-century portrait of the Tri-State area, where the borders of Iowa, Wisconsin, and Illinois converge. Significant riverine conservation and military footprints define the corridor, notably the Upper Mississippi National Wildlife Refuge and the sprawling Savanna Ordnance Depot further south near Savanna. The map illustrates a landscape of high ridges and isolated summits, such as Sinsinawa Mound and Horseshoe Mound, rising above the winding drainage basins of the Maquoketa River and the Turkey River.