Plans and maps of the Pennypack Creek Watershed in Philadelphia
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
Diagram from sewage treatment plan for Philadelphia, 1912
Queen Lane Pumping Station, proposed design
Southwest Sewage Treatment Plant under construction, 1949
West Philadelphia (or 24th Ward) Water Works, 1855-1870
