High Water: An Informal History of Flooding in Philadelphia
Rebirth of the Rivers: Water History Video 3
The Water Supply Problem of Philadelphia, 1899
Images from ‘The Water Supply of the City of Philadelphia by a proposed Aqueduct from Norristown Dam’
Water, Water Everywhere – Philadelphia Record, 1937-03-14
Perkiomen Water Supply Surveys, 1866
Map of Philadelphia showing Population in year 1920
Outline Map of the County and City of Philadelphia and Vicinity, 1883
1779 Revolutionary War-era map of Philadelphia and environs
Diagram showing heights of reservoirs, dams, standpipes &c, 1894
