Columbia subject headings:
Architectural photography--United States.
Architecture--Conservation and restoration--United States.
Documentary photography--United States.
Historic buildings--Conservation and restoration--United States.
Historic sites--Conservation and restoration--United States.
Harvard subject headings:
Architectural photography--United States.
Architecture--United States--Conservation and restoration.
Documentary photography--United States
Historic buildings--Conservation and restoration--United States
Historic sites--Conservation and restoration--United States
Princeton subject headings: