Thomas Run sewer outlet during construction
Frankford Creek: Sad History of an Urban Stream title page
Bureau of Water, Cumberland, west of 13th Street, pipe line, 1907
State Street pipeline construction, 1904
Belmont Filters construction, 1903
Finished Upper Roxborough filters, 1903
Upper Roxborough filter beds under construction, July 1902
Commencement of laying the main on the East side of the River, 1871