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“Philly H20: The History of Philadelphia's Watersheds and Sewers,”

http://www.phillyh2o.org/

A wide range of written records and reports, paintings, drawings, maps, plans, photographs, surveys, and other materials documenting the history of Philadelphia’s water and water and sewer systems from the colonial era into the 20th century. 

Referenced in:
Pennsylvanians and the Environment

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