Detailed large format map of Pennsylvania & New Jersey, hand colored by townships. The primary focus of the map is the illustration of the railroad lines and stations. There are also many roads, post offices, and rivers, noted.
Asher & Adams was a New York publishing firm known for their atlases. Notably, their maps were some of the first to prominently exhibit railroad lines, even if this meant a slight reduction in topographical detail. They specialized especially in state and county maps of the United States.