1956 Map of Delta

About this map

Slate Ridge defines the northern topography of this 1950s survey, where the border between York County, Pennsylvania, and Harford County, Maryland, cuts through a series of industrial and agricultural communities. The extraction of slate is evident in the cluster of settlements including Delta, Cardiff, and West Bangor, supported by the infrastructure of the Pennsylvania RR and the M & P RR. This region is a study in early mid-century rural life, anchored by numerous country churches such as Mt Nebo Ch and Slateville Ch. Further south, the landscape transitions into the rolling drainages of Broad Creek and Deer Creek, where smaller hamlets like Mill Green and Dublin are connected by a network of named local roads. The eastern edge of the map is dominated by the Susquehanna River Conowingo Res, providing a clear look at the water level and shoreline before decades of further development.