1924 Map of Mauch Chunk

About this map

The Lehigh River carves a deep path through Carbon County, Pennsylvania, anchoring a corridor of industrial and transit infrastructure. Parallel lines of the Lehigh Valley Railroad and the Central Railroad of New Jersey snake along the riverbanks, serving the concentrated populations in Mauch Chunk, Lehighton, and the zinc-industrial hub of Palmerton. This 1920s landscape is defined by its sharp verticality, where prominent ridges like Bear Mtn and Summer Mountain flank the narrow river valley. Away from the industrial centers, the map reveals a high density of rural institutions, such as the Larrytown Poor Farm and numerous family-named schoolhouses like Snyder School and Willis School. The southern edge of the survey highlights the dramatic Lehigh Gap, a critical geological and transport notch where the river breaks through the Blue Mountain ridge to enter the Lehigh Valley.