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: So many railroads!
Old News: Two unusual underground rescues
Map Lover’s Monday: Looking for Cleaner Water
Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Birch’s Views of Philadelphia, 1800
Cresheim Aqueduct
Drainage area plan, early 19th century
