Columbia subject headings:
Harvard subject headings:
Archives--Italy--Nievole River Valley--Congresses.
Nievole River Valley (Italy)--Archival resources--Congresses.
Nievole River Valley (Italy)--History--Congresses.
Princeton subject headings:
Archives--Italy--Nievole River Valley--Congresses.
Nievole River Valley (Italy)--Archival resources--Congresses.
Nievole River Valley (Italy)--History--Congresses.