Columbia subject headings:
Architecture--Washington (D.C.)
Buildings--Washington (D.C.)
Dwellings--Washington (D.C.)
Embassy buildings--Washington (D.C.)
Historic buildings--Washington (D.C.)
Harvard subject headings:
Architecture--Washington (D.C.)
Dwellings--Washington (D.C.)
Embassy buildings--Washington (D.C.)
Historic buildings--Washington (D.C.)
Washington (D.C.)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Washington (D.C.)
Dwellings--Washington (D.C.)
Embassy buildings--Washington (D.C.)
Historic buildings--Washington (D.C.)
Washington (D.C.)--Buildings.