Old News: Two unusual underground rescues
Cresheim Aqueduct
Drainage area plan, early 19th century
Diagram from sewage treatment plan for Philadelphia, 1912
Down Under, Part 2: Beaver Creek as it appears today
Stormwater Songs by John and Jan Haigis
Typhoid Fever and sewage tainted drinking water: An 1889 report from the Philadelphia Board of Health
Wooden Pipes in Philadelphia
Dauphin and Sydenham car crash, Jan. 17, 1978
Still photo from a video sewer inspection, 2000
