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Watersheds
Delaware River Watershed
Map Lovers’ Monday: Topography of Philadelphia from 1863
Plan of Philadelphia, John Hills, 1796
Delaware and Kensington Works (1851-1890)
Dauphin and Sydenham car crash, Jan. 17, 1978
Cohocksink Sewer System outlet at Laurel Street
The City and Port of Philadelphia on the River Delaware from Kensington, 1800
Map of the County of Philadelphia from Actual Survey, 1843