Wooden Water Pipe, removed from Market Street, December 6, 1901
Centre Square Engine House, ca. 1807
Bethlehem Water Works, 2011
Half a Century of Clean Water: The Clean Water Act, 1972-2022
Main Pumping Stations for Philadelphia Drinking Water
The Water Works in Centre Square, Philadelphia
“Philadelphia Underground,” Jan. 29, 1961
Centennial Exhibition situation plan, 1876
Torresdale Conduit work gang, 12/18/1906
Bureau of Water, Cumberland, west of 13th Street, pipe line, 1907