Map Lover’s Monday: Fairmount Park, 1869
Roberts Mill, Wingohocking Creek, 1871
Fairmount Park topographical map, showing East Park Reservoir, 1872
Dripps map of Frankford and vicinity, 1849
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Mount Moriah Historic Cemetery and Arboretum
Wingohocking Sewer across Penn St.
History of Belfield (1934)
Frankford Creek Watershed: A historical overview of the Philadelphia section
Report on channelization of Frankford Creek for flood control (1947)