1967 Map of Washburn SW

About this map

The Missouri River forms a wide, braided channel along the border of McLean and Oliver Counties, anchoring this mid-1960s topographic study. The landscape is defined by the sharp contrast between the river's riparian bottomlands and the upland plateaus, where industrial activity and early community centers are documented. North of the river, the Black Diamond Mine and a local Gravel Pit indicate the extractive economy of the region, while the Coal Lake Coulee cuts a deep drainage path toward the southern river valley.