Visions of the Schuylkill, 1884 and Now
Centre Square Water System
Centre Square Water Works, Drawings of Intake Basin
From Creek To Sewer
Manayunk and the Schuylkill Navigation
Centre Square Water Works, Frederick Graff, Sr. Plans, 1799
Centre Square Water Works, Latrobe Plans, 1799
Visionary planning report for Philadelphia region, 1928
The Water Supply Problem of Philadelphia, 1899
Native American Heritage Day
