Map Lovers’ Monday: Philadelphia Topography
Map Lovers’ Monday: AQUA, in the beginning
Map Lover’s Monday: Looking for Cleaner Water
Map Lover’s Monday: Fairmount Park, 1869
Schuylkill Navigation lock at Fairmount (Picturesque America)
Map Lovers’ Monday: 1891 Water Supply Plan
Bottled vs. Tap in 1906
Wooden Pipes in Philadelphia
Centre Square Water Works, Frederick Graff, Sr. Plans, 1799
Visionary planning report for Philadelphia region, 1928
