


Southwest Sewage Treatment Plant under construction, 1949

Plan and profile of proposed Delaware Seventh St. Sewer, 1850

Plan of Pine Street Sewer, 1830

Bridge Street Draw with draw open, July 26, 1897

Bridge Street Draw, intermediate pier, ca. 1896

Pipe Test, 1914

Swimmers at Pier 126, Delaware River, July 15, 1918

Allegheny Avenue Sewer at Pier 126, 1918

Devereaux Street Sewer, Philadelphia magazine, 1911

Sewer construction, Rock Run, 1922
