Map Lover’s Monday: Looking for Cleaner Water
Map Lovers’ Monday: Philadelphia front and center
High Water: Flooding in Philadelphia
Watersheds: Learning to care for and protect our local water resources
Streams, islands, and ferries of early Philadelphia
Exploring the Lenapehoking Watershed on Native American Heritage Day
Delaware River at Arch Street from the New Jersey side, 1914
The City and Port of Philadelphia on the River Delaware from Kensington, 1800
New Plan of Philadelphia, John A. Paxton, 1811
Penn’s Treaty with the Indians (Watson’s Annals)
