Bridge Street Draw, Cofferdam, ca. 1896
Torresdale Conduit work gang, 12/18/1906
Finished Upper Roxborough filters, 1903
Outhouse over the Schuylkill near Pottstown
Northeast Sewage Plant opening, 1951
City officials tour new interceptor sewer, 1953
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
State Road triple pipeline construction, 1904