Map Lovers’ Monday: AQUA, in the beginning
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
High Water: An Informal History of Flooding in Philadelphia
History of Water in Roxborough: A talk by Adam Levine
Map Lovers’ Monday: Topography of Philadelphia from 1863
Schuylkill River watershed, population in 1904
Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Annual reports and other documents relating to Philadelphia’s water supply system, 1796-1992
