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
Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Map Lovers’ Monday: Philadelphia front and center
Map of Philadelphia Harbor, Delaware and Schuylkill, 1912
Old U. S. Navy Yard
Schuylkill River from below the South Street Bridge, 1873
