Columbia subject headings:
Architecture--Conservation and restoration--United States--Handbooks, manuals, etc.
Historic preservation--United States--Handbooks, manuals, etc.
Historic sites--Conservation and restoration--United States--Handbooks, manuals, etc.
Harvard subject headings:
Princeton subject headings:
Architecture--Conservation and restoration--United States--Handbooks, manuals, etc.
Historic preservation--United States--Handbooks, manuals, etc.
Historic sites--Conservation and restoration--United States--Handbooks, manuals, etc.