1957 Map of Sourdough School

About this map

Sourdough School and East Fork School serve as primary landmarks in this mid-century portrait of rural Sweet Grass County. The landscape is defined by an intricate network of waterways draining toward the prominent Sweet Grass Creek, including the winding paths of Sourdough Creek, Cottonwood Creek, and Wildcat Creek. The drainage patterns, particularly the convergence of the East Fork and Dry Fork, illustrate the ranching and agricultural focus of the region during the 1950s. Infrastructure is sparse, primarily consisting of Gibson Road and the Boggs Ditch irrigation feature, highlighting the remote character of these high-plains foothills before later development. This survey reflects the persistence of one-room schoolhouses as community anchors in the Montana interior.