Map Lovers’ Monday: The Ellet Map of Philadelphia County, 1843
Still on the Map: Poquessing Creek and its Tributaries
A Brief History of Water in Northwest Philadelphia
The Waffle: Water History Video 6
Ghosts of Water in Fairmount Park, Part 1, with Adam Levine
Map Lovers’ Monday: Circles of Destruction
Birch’s Views of Philadelphia, 1800
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Models of Change
Mount Moriah Historic Cemetery and Arboretum
