Item Types Map

A map.

Colored ink drawing showing drainage areas and sewer inlets in Philaelphia in the early 19th century

Drainage area plan, early 19th century

1779 Philadelphia map

1779 Revolutionary War-era map of Philadelphia and environs

Journey of your Flush map

The Journey of Your Flush

International Exhibition situation plan, 1876

Centennial Exhibition situation plan, 1876

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

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