Columbia subject headings:
Della Rovere family--Congresses.
Nobility--Italy--Papal States--Congresses.
Nobility--Italy--Urbino--Congresses.
Papal States--History--1417-1605--Congresses.
Renaissance--Italy--Papal States--Congresses.
Renaissance--Italy--Urbino--Congresses.
Urbino (Italy)--Civilization--Congresses.
Harvard subject headings:
Art, Italian--Congresses.
Della Rovere family--Art patronage--Congresses.
Della Rovere family--Congresses.
Majolica, Italian--Congresses.
Nobility--Italy--Papal States--Congresses.
Nobility--Italy--Urbino--Congresses.
Papal States--History--1417-1605--Congresses.
Renaissance--Italy--Papal States--Congresses.
Renaissance--Italy--Urbino--Congresses.
Urbino (Italy)--Civilization--Congresses.
Urbino (Italy)--History--Congresses.
Urbino (Italy)--Intellectual life--Congresses.
Princeton subject headings:
Della Rovere Family--Art patronage--Congresses.
Della Rovere Family--Contributions in art--Congresses.
Urbino (Italy)--History--Congresses.
Urbino (Italy)--Intellectual life--Congresses.