Caves and inhabitants on the Delaware River, Watson’s Annals
Pipe Test, 1914
Jar of raw sewage before treatment, 2000
Fishing in the Schuylkill
City officials tour new interceptor sewer, 1953
Swimmers at Pier 126, Delaware River, July 15, 1918
Allegheny Avenue Sewer at Pier 126, 1918
Bingham Street Sewer, East of Tacony Creek, 1921
Sewer construction, Rock Run, 1922
State Road triple pipeline construction, 1904