Portrait of Samuel H. Ashbridge, Mayor
State Sen. James P. McNichol
Philadelphia Water Department chief engineer John Trautwine Jr., 1890s
Nine visiting nurses ready for work, ca. 1909
Front St. and Market St., 1881
Immigrant family, ca. 1900, nurse in black
Pipe Test, 1914
Jar of raw sewage before treatment, 2000
Fishing in the Schuylkill
Northeast Sewage Plant opening, 1951