Annual reports and other documents relating to Philadelphia’s water supply system, 1796-1992
Map Lovers’ Monday: Philadelphia front and center
Map of Philadelphia Harbor, Delaware and Schuylkill, 1912
Map Lover’s Monday: Fairmount Park, 1869
Roberts Mill, Wingohocking Creek, 1871
Old U. S. Navy Yard
Fairmount Park topographical map, showing East Park Reservoir, 1872
Dripps map of Frankford and vicinity, 1849
Pennypack Park Map
Schuylkill River from below the South Street Bridge, 1873
