Columbia subject headings:
Siena (Italy)--Description and travel.
Siena (Italy)--In art.
Harvard subject headings:
Siena (City-state)--In art--Catalogs.
Siena Region (Italy)--In art--Catalogs.
Princeton subject headings:
Catalogs.
Siena (City-state)--In art--Catalogs.
Siena Region (Italy)--In art--Catalogs.