Columbia subject headings:
Harvard subject headings:
Archives--Italy--Emilia-Romagna--Congresses.
Family archives--Italy--Emilia-Romagna--Congresses.
Italy--History--1268-1492--Sources--Congresses.
Italy--History--1492-1559--Sources--Congresses.
Princeton subject headings:
Archives--Italy--Emilia-Romagna--Congresses.
Emilia-Romagna (Italy)--History, Local--Sources--Congresses.
Family archives--Italy--Emilia-Romagna--Congresses.