State Street pipeline construction, 1904
A.C. Abbott, MD
Northern Liberties and Spring Garden Water Works
Water Works Standpipe, 1853
Race Bridge, Fairmount Water Works, 1834
View of Fairmount Water Works, ca. 1827
Pipe Test, 1914
Jar of raw sewage before treatment, 2000
Allegheny Avenue Sewer at Pier 126, 1918
State Road triple pipeline construction, 1904