Places Pennsylvania

Philadelphia the Manufacturing and Industrial Capital map, 1906

1779 Philadelphia map

1779 Revolutionary War-era map of Philadelphia and environs

International Exhibition situation plan, 1876

Centennial Exhibition situation plan, 1876

Upper Darby map, G.M. Hopkins 1877

Upper Darby map, 1877

1914 map showing the plan for the collection and treatment of sewage in Philadelphia.

Plan for the Collection, Treatment and Disposal of Sewage, 1914