Includes section "Bullettino bibliografico".
The 1st series is a collection chiefly of medieval documents, supplemented by the Appendice in 9 vols. containing minor documents, letters, bibliographical and biographical notices. Beginning with the new series in 1855 the Archivio contains Documenti e memorie, Rassegna bibliografica, Necrologie correspondenza, annunzi bibliografici, etc.