The Water and Drainage History of Philadelphia: A seven-part course
Down Under!
Streams, islands, and ferries of early Philadelphia
Archival Storytelling: A snowy Super Bowl Sunday at Sydenham & Dauphin
Dauphin and Sydenham car crash, Jan. 17, 1978
Still photo from a video sewer inspection, 2000
Norman Lofton inspects sewer at Ditman and Sheffield, 1987
Half a Century of Clean Water: The Clean Water Act, 1972-2022
Emscher Tank Installation at Essen Nord, Germany
Drain water from sludges obtained from sedimentation, septic and Emscher tanks