Cobbs Creek in the Days of the Old Powder Mill
A Tour of Philadelphia’s Delaware River Waterfront in 1876
1826 Report of the Committee of Delaware County on the subject of Manufactories, Unimproved Mill Seats, etc. in said county.
1882 Report from the Army Corps of Engineers on Navigation in Frankford Creek, Philadelphia
Drought and the Gardener
Kensington Water Supply in 1883
Requiem for a stream: Adams Run in Oak Lane
Requiem for a stream: Still House Run in Manayunk
Filling Low Land: A Story of Ash-Dumping in the Wingohocking Creek Watershed
The Manayunk Expressway
