Columbia subject headings:
Art patrons--Italy.
Painting, Italian.
Painting, Renaissance--Italy.
Piero, della Francesca, 1416?-1492.
Harvard subject headings:
Art--Political aspects--Italy--History--15th century.
Painting, Italian--15th century--Expertising.
Painting, Renaissance--Expertising--Italy.
Piero, della Francesca, 1416?-1492--Criticism and interpretation.
Princeton subject headings:
Art--Political aspects--Italy--History--15th century.
Painting, Italian--15th century--Expertising.
Painting, Renaissance--Expertising--Italy.
Piero, della Francesca, 1416?-1492--Criticism and interpretation.