Columbia subject headings:
Garfagnana (Italy : Region)--Antiquities--Congresses.
Garfagnana (Italy : Region)--History--Congresses.
Harvard subject headings:
Art, Italian--Italy--Garfagnana--Congresses.
Este family--History--Congresses.
Garfagnana (Italy)--Antiquities--Congresses.
Garfagnana (Italy)--History--Congresses.
Princeton subject headings:
Este family--Congresses.
Ferrara (Italy)--History--Congresses.
Garfagnana (Italy)--History--Congresses.