Columbia subject headings:
Delaware River Valley (N.Y.-Del. and N.J.)--History.
Quakers--Delaware River Valley (N.Y.-Del. and N.J.)--History.
Harvard subject headings:
Delaware River Valley (N.Y.-Del. and N.J.)--History.
Quakers--Delaware River Valley (N.Y.-Del. and N.J.)--History.
Princeton subject headings:
Delaware River Valley (N.Y.-Del. and N.J.)--History.
Quakers--Delaware River Valley (N.Y.-Del. and N.J.)--History.