Map Lovers’ Monday: AQUA, in the beginning
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
Schuylkill Navigation lock at Fairmount (Picturesque America)
Scenes on the Wissahickon Creek (Picturesque America)
Map Lovers’ Monday: 1891 Water Supply Plan
Early visions of Philadelphia’s airport
