The Schuylkill Navigation: A Journey on the Historic Nineteenth Century Waterway
Thomas Gill Maps of the Schuylkill Navigation, 1827
Map Lovers’ Monday: AQUA, in the beginning
Schuylkill Navigation: Celebrating 200 years
Map Lover’s Monday: Looking for Cleaner Water
Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Bottled vs. Tap in 1906
Map of the County of Philadelphia from Actual Survey, 1843