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Philadelphia Water Department
City officials tour new interceptor sewer, 1953
Plan for the Collection, Treatment and Disposal of Sewage, 1914
Pennypack Sewage Treatment Works, 1914
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
Devereaux Street Sewer, Philadelphia magazine, 1911
Porous paving on basketball court
Water Before and After Roxborough
State Road triple pipeline construction, 1904
Torresdale Conduit work gang, 1906
Upper Roxborough Filter Beds Complete, 1903
Upper Roxborough Filter Bed Construction, 1902
Keystone Saw Works
Jonval Turbines at New Mill House, 1870
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