Wissahickon Pipe Aqueduct, Roxborough to Mt. Airy, 1868
Map Lovers’ Monday: 1891 Water Supply Plan
Plan of Philadelphia, John Hills, 1796
Girard Avenue Bridge, Fairmount Park, 1895
Queen Lane Pumping Station, proposed design
Early photographs of Fairmount and vicinity, 1848
Photos from the Philadelphia Anglers’ Club
Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Requiem for a stream: A brief history of Dobson’s Run
Down Under, Part 2: Beaver Creek as it appears today
