Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Map Lovers’ Monday: Philadelphia front and center
Philadelphia from Belmont, West Park (Picturesque America)
Schuylkill River above Belmont (Picturesque America)
Drive along the Wissahickon Creek Vallley (Picturesque America)
Report on channelization of Frankford Creek for flood control (1947)
Frankford Creek Watershed Historical Timeline
Frankford Creek Watershed in the context of the development of Philadelphia’s sewers and sewage treatment system
Newspaper Clipping Scrapbooks of Frederic Graff Jr.,Chief Engineer of the Philadelphia Water Department: Part 1, 1854-1857
Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
