Isometrical View of Fairmount Water Works, 1843
Wooden Water Pipe, removed from Market Street, December 6, 1901
Centre Square Engine House, ca. 1807
Bethlehem Water Works, 2011
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
Oak Lane Reservoir pipeline, 1904