Items

Historic resources from our archives - images, maps, documents, and more.

Black-and-white image of a body of water with trees and shoreline in the far distance

Delaware River at Arch Street from the New Jersey side, 1914

Black-and-white image showing sewer outlet, retaining walls and body of water

Cohocksink Sewer System outlet at Laurel Street

Black-and-white image of a table with numbers in columns

Bacteria in Delaware River, Torresdale Filters, 1913

The Pennypack Sewage Treatment Works in 1914

Pennypack Sewage Treatment Works, 1914