The pipe beneath the rocky path
Map Lover’s Monday: Looking for Cleaner Water
Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Thomas Mill Covered Bridge over Wissahickon Creek (Picturesque America)
Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
High Water: Flooding in Philadelphia
Fairmount Water Works, W.H. Bartlett, 1839
Fairmount and vicinity, 1839
Isometrical View of Fairmount Water Works, 1843
Centre Square Engine House, ca. 1807