Columbia subject headings:
Pennsylvania--History--Colonial period, ca. 1600-1775.
Pennsylvania--History--Revolution, 1775-1783.
Harvard subject headings:
Pennsylvania--History--Colonial period, ca. 1600-1775.
Pennsylvania--History--Revolution, 1775-1783.
Princeton subject headings:
Pennsylvania--History--Colonial period, ca. 1600-1775.
Pennsylvania--History--Revolution, 1775-1783.