Topics Landscape Changes

Diagram and description of the typhoid bacteria

The Water and Drainage History of Philadelphia, Part 6

The Water and Drainage History of Philadelphia, Part 5

The Water and Drainage History of Philadelphia, Part 4

A Roman aqueduct in Segovia, Spain, 2006

The Water and Drainage History of Philadelphia, Part 3

A black-and-white image showing several figures standing on the shore, with a boat, several other figures and a building in the background

The Water and Drainage History of Philadelphia, Part 2

Image shows multicolored trees and a river cutting through them with two bridges visible

Watersheds: Learning to care for and protect our local water resources

Birkinbine Schuylkill Hydrographical Survey 1861-66

Two reports on the state of the Schuylkill River, 1867

Black-and-white image of workers in a pit with a sewer opening behind them and text

Frankford Creek: Sad History of an Urban Stream title page

Duplex Pumping Engine, Belmont Works

Duplex Pumping Engine, Belmont Works

View of Fairmount Water Works, ca. 1827

Pegg's Run

Pegg’s Run, Northern Liberties (Watson’s Annals)