Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
Native American Heritage Day
State of the Schuylkill River in 1876: Sewage pollution and possible remedies
Streams, islands, and ferries of early Philadelphia
Images from ‘The Water Supply of the City of Philadelphia by a proposed Aqueduct from Norristown Dam’
Perkiomen Water Supply Surveys, 1866
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
Schuylkill steamship excursions ad, 1852