Columbia subject headings:
Architecture--Illinois--Quincy.
Historic buildings--Illinois--Quincy.
Quincy (Ill.)--Buildings, structures, etc.
Washington Park (Quincy, Ill.)--Buildings, structures, etc.
Harvard subject headings:
Historic buildings--Conservation and restoration--Illinois--Quincy.
Quincy (Ill.)--Buildings, structures, etc.
Quincy (Ill.)--History.
Princeton subject headings: