Wooden Water Pipe, removed from Market Street, December 6, 1901
Bethlehem Water Works, 2011
Roman Aqueduct in Segovia, Spain
Thomas Run sewer outlet during construction
Frankford Creek: Sad History of an Urban Stream title page
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