Columbia subject headings:
Franciscans--Historiography--Congresses.
Thomas, of Celano, active 1257--Congresses.
Harvard subject headings:
Franciscans--Historiography--Congresses.
Thomas, of Celano, active 1257--Congresses.
Princeton subject headings:
Church historians--Italy--Biography--Congresses.
Franciscans--Historiography--Congresses.
Franciscans--Italy--Biography--Congresses.
Thomas, of Celano, active 1257--Congresses.