Fourth of July, Centre Square, ca. 1812
Wooden Water Pipe, removed from Market Street, December 6, 1901
Centre Square Engine House, ca. 1807
Bethlehem Water Works, 2011
Roman Aqueduct in Segovia, Spain
Norman Lofton inspects sewer at Ditman and Sheffield, 1987
Thomas Run sewer outlet at Cobbs Creek
Thomas Run sewer outlet during construction
Wood truss drawbridge, Orthodox Street over Frankford Creek, 1899 [Detail]
Wood truss drawbridge, Orthodox Street over Frankford Creek, rebuilt 1899