Columbia subject headings:
Illumination of books and manuscripts, Italian--Italy--Siena.
Illumination of books and manuscripts, Medieval--Italy--Siena.
Miniature painting, Italian--Italy--Siena.
Harvard subject headings:
Illumination of books and manuscripts, Italian--Italy--Siena--13th century.
Illumination of books and manuscripts, Medieval--Italy--Siena.
Princeton subject headings:
Illumination of books and manuscripts, Italian--Italy--Siena.
Painting, Italian--Italy--Siena.