


Map Lovers’ Monday: The David Rumsey Map Collection

Map Lovers’ Monday: New Jersey 1869

Map Lovers’ Monday: Topography of Philadelphia from 1863

Dock Creek Sewer in 1849: A report on its condition made to City Councils

High Water: Flooding in Philadelphia

From Creek To Sewer

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

Penn’s Treaty with the Indians (Watson’s Annals)
