


Ghosts of Water in Fairmount Park, Part 1, with Adam Levine

Sandy Run Watershed and the Holmesburg Water Works

Plans and maps of the Pennypack Creek Watershed in Philadelphia

Newspaper Clipping Scrapbooks of Frederic Graff Jr.,Chief Engineer of the Philadelphia Water Department: Part 1, 1854-1857

Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871

Requiem for a stream: Adams Run in Oak Lane
