Columbia subject headings:
Cataloging of manuscripts--Congresses.
Manuscript dating--Congresses.
Manuscripts, Medieval--Congresses.
Harvard subject headings:
Cataloging of manuscripts--Congresses.
Cataloging of manuscripts--Europe--Congresses.
Manuscript dating--Congresses.
Manuscripts, Medieval--Congresses.
Princeton subject headings:
Cataloging of manuscripts--Congresses.
Manuscript dating--Congresses.
Manuscripts, Medieval--Congresses.