Columbia subject headings:
Wissahickon Creek (Pa.)
Harvard subject headings:
Fairmount Park (Philadelphia, Pa.)--Guidebooks.
Parks--Pennsylvania--Philadelphia.
Philadelphia (Pa.)--Guidebooks.
Wissahickon Creek (Pa.)
Wissahickon Creek (Pa.)--Guidebooks.
Wissahickon Creek Valley (Pa.)--Guidebooks.
Princeton subject headings:
Wissahickon Creek (Pa.)