1948 Map of Crosby

About this map

Potato Creek carves a deep valley through the northern Allegheny Plateau, anchoring a landscape defined by timber-era settlements and early industrial infrastructure. In this mid-century environment, the village of Crosby and nearby Colegrove sit along the narrow valley floor, connected by the Pennsylvania railroad line that follows the river's path. To the west, the high terrain of Sergeant township is marked by the remote settlement of Clermont, where the Clermont Cem and local school buildings once served a community centered on natural resource extraction. The map reveals an intricate network of Pipe Lines threading through steep hollows like Wernwag Hollow and Spangler Hol, tracing the region's history of oil and gas transit. From the southern boundary at the McKean Co Elk Co line to the industrial sidings at Hamlin Sta, this survey captures the transition between mountain wilderness and the rail-dependent economies of the late 1940s.