Fairmount Water Works from the forebay, 1833
Frederick Graff portrait with Centre Square Water Works in background
Fourth of July, Centre Square, ca. 1812
Wooden Water Pipe, removed from Market Street, December 6, 1901
Portrait of Benjamin Henry Latrobe
Centre Square Engine House, ca. 1807
Southeast Corner of Third and Market, Philadelphia
Benjamin Franklin, the Fireman
Exploring the Lenapehoking Watershed on Native American Heritage Day
Sewer crawler Clarence Baskerville checks tunnel for leaks. He has faced the dangers of working in sewers for past three years, 1971