Fairmount Water Works (Picturesque America)
Chestnut Street Bridge, on the Schuylkill River (Picturesque America)
Last gasp of the Schuylkill Interceptor, December 20, 1956
Schuylkill River from below the South Street Bridge, 1873
Plan of Philadelphia, John Hills, 1796
Wingohocking Sewer across Penn St.
Two Frankford Creek Bridges, 1896-1899
Centre Square Water Works, Drawings of Intake Basin
Centre Square Water Works, Frederick Graff, Sr. Plans, 1799
Centre Square Water Works, Latrobe Plans, 1799