Water Bureau Newspaper Scrapbook, 1942-1952
The Schuylkill Navigation: A Journey on the Historic Nineteenth Century Waterway
The Schuylkill Navigation: A Journey on the Historic Nineteenth Century Waterway
Thomas Gill Maps of the Schuylkill Navigation, 1827
Map Lovers’ Monday: Philadelphia Topography
Map Lovers’ Monday: AQUA, in the beginning
Map Lovers’ Monday: The David Rumsey Map Collection
Map Lovers’ Monday: More is not necessarily better.
Map Lover’s Monday: Looking for Cleaner Water
Schuylkill River watershed, population in 1904
