Columbia subject headings:
Architecture--Ontario--Toronto--Guidebooks.
Toronto (Ont.)--Buildings, structures, etc.--Guidebooks.
Harvard subject headings:
Architecture--Ontario--Toronto--Guidebooks.
Buildings--Ontario--Toronto--Guidebooks.
Toronto (Ont.)--Buildings, structures, etc.--Guidebooks.
Toronto (Ont.)--Guidebooks.
Princeton subject headings:
Architecture--Ontario--Toronto--Guidebooks.
Historic buildings--Ontario--Toronto--Guidebooks.
Toronto (Ont.)--Buildings, structures, etc.--Guidebooks.