Columbia subject headings:
Popes--Art patronage--History--To 1500--Sources--Bibliography--Catalogs.
Spain--Church history--Sources--Bibliography--Catalogs.
Harvard subject headings:
Popes--Art patronage--History--To 1500--Sources--Bibliography--Catalogs.
Spain--Church history--Sources--Bibliography--Catalogs.
Princeton subject headings:
Catalogs.
Popes--Art patronage--History--To 1500--Sources--Bibliography--Catalogs.
Spain--Church history--Sources--Bibliography--Catalogs.