The Centre Square Works, 1801
Native American Heritage Day
State of the Schuylkill River in 1876: Sewage pollution and possible remedies
Pennsylvania Railroad Bridge at Manayunk, about 1895
Panoramic Manayunk: Views Past and Present
Two reports on the state of the Schuylkill River, 1867
Streams, islands, and ferries of early Philadelphia
Schuylkill Navigation Company Scrapbook
Gritty and the Phanatic in Ida’s Floodwaters
Images from ‘The Water Supply of the City of Philadelphia by a proposed Aqueduct from Norristown Dam’
