Bethlehem Water Works, 2011
Ventilating cover for manholes
Torresdale Conduit work gang, 12/18/1906
Bureau of Water, Cumberland, west of 13th Street, pipe line, 1907
Oak Lane Reservoir pipeline, 1904
State Street pipeline construction, 1904
Finished Upper Roxborough filters, 1903
Upper Roxborough filter beds under construction, July 1902
Outhouse over the Schuylkill near Pottstown
Engine House of the Belmont Works
