Fairmount Water Works and the Lemon Hill Observatory
At the Confluence of Navigation History: Past, Present and Future
Fairmount Water Works: The Surprising History of an American Landmark
Schuylkill Navigation: Celebrating 200 years
The Schuylkill Navigation: A Journey on the Historic Nineteenth Century Waterway
Thomas Gill Maps of the Schuylkill Navigation, 1827
Map Lovers’ Monday: Two views of the Union Canal in central Pennsylvania
Map Lovers’ Monday: Philadelphia in 1957, according to the Pennsy
Schuylkill Navigation: Celebrating 200 years
Map Lovers’ Monday: Topography of Philadelphia from 1863
