Columbia subject headings:
Historic preservation--Northeastern States.
Historic sites--Conservation and restoration--Northeastern States.
National parks and reserves--Northeastern States--Management.
United States. National Park Service. Northeast Region.
Harvard subject headings:
Historic preservation--Northeastern States.
Historic sites--Conservation and restoration--Northeastern States.
National parks and reserves--Northeastern States--Management.
United States. National Park Service. Northeast Region.
Princeton subject headings:
Historic preservation--Northeastern States.
Historic sites--Conservation and restoration--Northeastern States.
National parks and reserves--Northeastern States--Management.
United States. National Park Service. Northeast Region