Roberts Mill, Wingohocking Creek, 1871
Fairmount Park topographical map, showing East Park Reservoir, 1872
Dripps map of Frankford and vicinity, 1849
Thomas Mill Covered Bridge over Wissahickon Creek (Picturesque America)
Wingohocking Sewer across Penn St.
History of Belfield (1934)
Fairmount Gardens with the Schuylkill Bridge, 1839
19th century life in South Philadelphia’s marshland
Frankford Creek: Sad History of an Urban Stream title page
“A Snake That Will Be Straightened Out,” map of Frankford Creek with proposed changes, 1949