Columbia subject headings:
Harvard subject headings:
Autographs--Europe, Western--Congresses.
Manuscripts, Latin (Medieval and modern)--Europe, Western--Congresses.
Manuscripts, Medieval--Europe, Western--Congresses.
Paleography, Latin--Europe, Western--Congresses.
Paleography--Europe, Western--Congresses.
Princeton subject headings:
Autographs--Europe--History--Congresses.
Manuscripts, Latin (Medieval and modern)--Congresses.
Manuscripts, Medieval--Congresses.