Columbia subject headings:
Harvard subject headings:
Calendars--Europe--History--To 1500--Pictorial works.
Europe--History--Social life and customs--To 1500--Pictorial works.
Illumination of books and manuscripts, Medieval
Time in art--History--To 1500--Pictorial works.
Zodiac in art--History--To 1500--Pictorial works.
Princeton subject headings:
Calendars--Spain--History.