Plan of Philadelphia, John Hills, 1796
Queen Lane Pumping Station, proposed design
Centre Square Water Works, Drawings of Intake Basin
Centre Square Water Works, Frederick Graff, Sr. Plans, 1799
Centre Square Water Works, Latrobe Plans, 1799
The Water Supply Problem of Philadelphia, 1899
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Fairmount Water Works, W.H. Bartlett, 1839
Fairmount and vicinity, 1839