| Aberystwyth, National Library of Wales | 16626 | Aberystwyth | United Kingdom |
| Aix-en-Provence, Bibliothèque de Méjanes | 683 | Aix-en-Provence | France |
| Alava, Seminario Diocesano de Vitoria | 9556 | Alava | spain |
| Amiens, Bibliothèque Louis Aragon | 5420 | Amiens | France |
| Amsterdam, Universiteitsbibliotheek | 1815 | Amsterdam | The Netherlands |
| Antwerp, Plantin-Moretus Museum | 565 | Antwerp | Belgium |
| Aquileia, Biblioteca del Museo Archeologico Nazionale | 10865 | Aquileia | Italy |
| Archivio Soli-Muratori, Biblioteca Estense universitaria | 15970 | Modena | Italy |
| Arnhem, Gelders Archief | 1138 | Arnhem | The Netherlands |
| Athens, Benaki Museum | 5068 | Athens | Greece |
| Augsburg, Staats- und Stadtbibliothek | 14320 | Augsburg | Germany |
| Austin, Harry Ransom Center | 531 | Austin | United States |
| Avignon, Bibliothèque municipale | 637 | Avignon | France |
| Barcelona, Biblioteca de la Universitat de Barcelona | 13681 | Barcelona | Spain |
| Basel, Universitätsbibliothek | 5410 | Basel | Switzerland |
| Beauvais, Bibliothèque municipale | 9967 | Beauvais | France |
| Bednja, castle Trakošćan | 6352 | Bednja | Croatia |
| Berlin, Bode Museum | 5092 | Berlin, Bode Museum, Münzkabinett | Germany |
| Berlin, Deutsche Staatsbibliothek | 3363 | Berlin | Germany |
| Besançon, Bibliothèque municipale | 331 | Besançon | France |
| Bologna, Archivio di Stato | 106 | Bologna | Italy |
