Columbia subject headings:
Art museums--Washington (D.C.)--Guidebooks.
Historic buildings--Washington (D.C.)--Guidebooks.
Museums--Washington (D.C.)--Guidebooks.
Washington (D.C.)--Guidebooks.
Harvard subject headings:
Art museums--Washington (D.C.)--Guidebooks.
Historic buildings--Washington (D.C.)--Guidebooks.
Museums--Washington (D.C.)--Guidebooks.
Washington (D.C.)--Guidebooks
Princeton subject headings: