Columbia subject headings:
Architecture--Massachusetts--Salem--Guidebooks.
Buildings--Massachusetts--Salem--Guidebooks.
Salem (Mass.)--Buildings, structures, etc.--Guidebooks.
Salem (Mass.)--Guidebooks.
Harvard subject headings:
Architecture--Massachusetts--Salem--Guidebooks.
Historic buildings--Massachusetts--Salem--Guidebooks.
Salem (Mass.)--Buildings, structures, etc.--Guidebooks.
Salem (Mass.)--Guidebooks.
Princeton subject headings: