Columbia subject headings:
Civilization, Medieval.
Color in heraldry.
Devices (Heraldry)
Heraldry--History.
Harvard subject headings:
Civilization, Medieval.
Color in heraldry.
Devices (Heraldry)
Heraldry--History
Princeton subject headings:
Animals--Symbolic aspects.
Civilization, Medieval.
Signs and symbols.
Symbolism of colors.