Mount Moriah Historic Cemetery and Arboretum
Darby, Delaware County, Pennsylvania, 1877
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
1826 Report of the Committee of Delaware County on the subject of Manufactories, Unimproved Mill Seats, etc. in said county.
Streams, islands, and ferries of early Philadelphia
Thomas Run sewer outlet at Cobbs Creek
