1955 Map of Sioux City

About this map

The Missouri River serves as the dominant spine of this mid-century landscape, carving a wide valley that separates the South Dakota-Nebraska and South Dakota-Iowa borders. The newly formed Lewis and Clark Lake, created by the Gavins Point Dam near Yankton, indicates the era's significant hydro-engineering efforts to control the river's flow. This map documents a critical junction of agriculture and education, anchoring the region with institutions like the University of South Dakota in Vermillion and Wayne State College in Wayne.