Map Lovers’ Monday: Water for City Hall
Wissahickon Pipe Aqueduct, Roxborough to Mt. Airy, 1868
Map Lovers’ Monday: 1891 Water Supply Plan
Listening for leaks
Wooden Pipes in Philadelphia
Pipeline being laid in Wissahickon Avenue
Northeast Philadelphia history, one page at a time: The Holmesburg Library Scrapbook Collection
Wooden Water Pipe, removed from Market Street, December 6, 1901
Half a Century of Clean Water: The Clean Water Act, 1972-2022
“Philadelphia Underground,” Jan. 29, 1961