Columbia subject headings:
Catherine, of Siena, Saint, 1347-1380--Language--Congresses.
Catherine, of Siena, Saint, 1347-1380. Correspondence--Congresses.
Christian literature--History and criticism--Congresses.
Italian language--1300-1500--Congresses.
Mysticism--Italy--History--Middle Ages, 600-1500--Congresses.
Harvard subject headings:
Catherine, of Siena, Saint, 1347-1380--Language--Congresses.
Catherine, of Siena, Saint, 1347-1380. Correspondence--Congresses.
Christian literature--History and criticism--Congresses.
Italian language--1300-1500--Congresses.
Mysticism--Italy--History--Middle Ages, 600-1500--Congresses.
Princeton subject headings: