Wissahickon Pipe Aqueduct, Roxborough to Mt. Airy, 1868
Ghosts of Water in Fairmount Park, Part II, with Adam Levine
Plan of Philadelphia, John Hills, 1796
Wingohocking Sewer across Penn St.
Philadelphia’s Sewer Problem
Queen Lane Pumping Station, proposed design
West Philadelphia (or 24th Ward) Water Works, 1855-1870
Early visions of Philadelphia’s airport
Frankford Creek Watershed: A historical overview of the Philadelphia section
Frankford Creek Watershed Historical Timeline
