Thomas Gill Maps of the Schuylkill Navigation, 1827
Map Lover’s Monday: Looking for Cleaner Water
Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Map of Philadelphia Harbor, Delaware and Schuylkill, 1912
Pine Street sewer plan, 1848
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Early visions of Philadelphia’s airport
Requiem for a stream: Still House Run in Manayunk
Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
