Columbia subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574--Correspondence.
Ferdinando I, Grand-Duke of Tuscany, 1549-1609--Correspondence.
Francesco I, Grand-Duke of Tuscany, 1541-1587--Correspondence.
Medici, House of--Art patronage.
Harvard subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574--Art collections--Sources.
Cosimo I, Grand-Duke of Tuscany, 1519-1574--Correspondence.
Ferdinando I, Grand-Duke of Tuscany, 1549-1609--Correspondence.
Ferdinando I,--Art collections--Sources.
Francesco I, Grand-Duke of Tuscany, 1541-1587--Art collections--Sources.
Francesco I, Grand-Duke of Tuscany, 1541-1587--Correspondence.
Italy--History--16th century--Sources.
Italy--Intellectual life--1268-1559--Sources.
Italy--Intellectual life--1559-1789--Sources.
Princeton subject headings:
Art--Collectors and collecting--Italy--History--Correspondence.
Collectors and collecting--Italy--History--Correspondence.
Cosimo I, Grand-Duke of Tuscany, 1519-1574--Correspondence.
Ferdinando I, Grand-Duke of Tuscany, 1549-1609--Correspondence.
Francesco I, Grand-Duke of Tuscany, 1541-1587--Correspondence.