Early visions of Philadelphia’s airport
Frankford Creek Watershed Historical Timeline
Drawing Dock Creek
Overbrook, as it was. A brief history of the Overbrook neighborhood of Philadelphia, focusing on changes in the natural landscape.
Cobbs Creek in the Days of the Old Powder Mill
Dock Creek Sewer in 1849: A report on its condition made to City Councils
The Worry of the Wires
Drainage and Sewerage Report, 1853
Fairmount Water Works from the forebay, 1833
Philadelphia the Manufacturing and Industrial Capital map, 1906