1915 Map of White Rock

About this map

Lake Traverse dominates the center of this 1915 survey, marking the watery tri-state boundary where South Dakota, Minnesota, and North Dakota meet. The landscape is defined by the headwaters of the Bois de Sioux River and the meandering Mustinka River, which flows past the settlement of Wheaton before entering the lake. A significant portion of the western territory is designated as the Sisseton and Wahpeton Indian Reservation, its north boundary clearly etched across the plains.