


Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912

New Mill House at Fairmount

Water Works Standpipe, 1853

Lancaster/Schuylkill Bridge (Upper Ferry Bridge)

Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911

State Road triple pipeline construction, 1904

Upper Roxborough Filter Beds Complete, 1903
