Columbia subject headings:
New Jersey--Description and travel.
Pennsylvania Railroad--History.
Pennsylvania--Description and travel.
Pennsylvania--History.
Harvard subject headings:
New Jersey--Description and travel.
Pennsylvania Railroad--History.
Pennsylvania--Description and travel.
Pennsylvania--History.
Railroads--New Jersey
Railroads--Pennsylvania
Princeton subject headings:
New Jersey--Description and travel.
Pennsylvania Railroad--History.
Pennsylvania--Description and travel.
Pennsylvania--History.