


Fairmount Water Works (Picturesque America)

Schuylkill Navigation lock at Fairmount (Picturesque America)

Wissahickon Pipe Aqueduct, Roxborough to Mt. Airy, 1868

Plan of Philadelphia, John Hills, 1796

Queen Lane Pumping Station, proposed design

Listening for leaks

Centre Square Water Works, Drawings of Intake Basin

Centre Square Water Works, Frederick Graff, Sr. Plans, 1799

Centre Square Water Works, Latrobe Plans, 1799

Typhoid bacteria diagram, 1905
