Cobbs Creek: A Brief Historical Overview by Adam Levine
Glossary of Drainage Terms by C. Drew Brown
Native American Heritage Day
The Water and Drainage History of Philadelphia: A seven-part course
The Water and Drainage History of Philadelphia, Part 6
The Water and Drainage History of Philadelphia, Part 5
The Water and Drainage History of Philadelphia, Part 4
The Water and Drainage History of Philadelphia, Part 3
The Water and Drainage History of Philadelphia, Part 2
Streams, islands, and ferries of early Philadelphia
