The Centre Square Works, 1801
Northeast Philadelphia history, one page at a time: The Holmesburg Library Scrapbook Collection
Two reports on the state of the Schuylkill River, 1867
Fairmount and vicinity, 1839
Centre Square Engine House, ca. 1807
Centennial Exhibition situation plan, 1876
Northern Liberties and Spring Garden Water Works
Electric Pump Installations at Lardner’s Point Pumping Station
Fairmount Water Works, about 1860