| [Pb22500] | Sigismund III of Poland, Letter of Sigismund III of Poland to Giacomo Lauro | | | Letter | Latin | | | Letter of Sigismund III of Poland to Giacomo Lauro | 1 |
| [Pb22378] | Jerome of Stridon, Inventarium primae [-tertiae] partis epistolarum sancti Hieronymi, Theodorus Laelius (adapter), Lyon: Jacques Sacon (printer), 1508 | Jacques Sacon | Lyon | Letter | Latin | 2o | | Epistolae | 1 |
| [Pb22376] | Jerome of Stridon, Epistolare beati Hieronymi, Theodorus Laelius (adapter), Basel: Nicolaus Kesler (printer), 8 August 1492 | Nicolaus Kesler | Basel | Letter | Latin | 2o | | Epistolae | 1 |
| [Pb22377] | Jerome of Stridon, Liber Epistolarum Sancti Hieronymi, Theodorus Laelius (adapter), Basel: Nicolaus Kesler (printer), 1497 | Nicolaus Kesler | Basel | Letter | Latin | 2o | | Epistolae | 1 |
| [Pb20085] | Andrzej Krzycki, Andreae Cricii Episcopi Premislien[sis] ad Ioannem Antoniu[m] Pulleonem [...] de negotio Prutenico Epistola, Cracow: Hieronim Wietor (printer), 1525 | Hieronim Wietor | Cracow | Letter | Latin | | | De negotio Prutenico Epistola | 1 |
| [Pb2771] | Stanisław Hozjusz, Letter of Stanislaus Hosius to Catherine Jagiellon | | | Letter | | | | Letter of Stanislaus Hosius to Catherine Jagiellon | 1 |
| [Pb2779] | Jerónimo Osório, Letter of Jéronimo Osório to Stanisław Hozjusz | | | Letter | Latin | | | Letter of Jéronimo Osório to Stanisław Hozjusz | 1 |
| [Pb2774] | Stanisław Hozjusz, Letter of Stanisław Hozjusz to Charles de Guise | | | Letter | Latin | | | Letter of Stanisław Hozjusz to Charles de Guise (3 April 1573) | 1 |
| [Pb8486] | Bonifacius Amerbach, Amerbach's letter to à Lasco (19 May 1527), 19 May 1527 | | | Letter | Latin | | | Amerbach's letter to à Lasco (19 May 1527) | 1 |
| [Pb16851] | Francesco Filelfo, Francisci Philelphi breviores elegantioresque Epistole omnibus qui pure et latine scribere cupuint muleu utiles et necessarie, Cracow: Jan Haller (printer), 1513 | Jan Haller | Cracow | Letter | Latin | 4o | | Breviores elegantioresque Epistole omnibus | 1 |
| [Pb2778] | Stanisław Hozjusz, Letter of Stanisław Hozjusz to Jéronimo Osório | | | Letter | Latin | | | Letter of Stanisław Hozjusz to Jéronimo Osório | 1 |
| [Pb8923] | Cicero, Epistolarvm M[arci] T[ullii] Ciceronis, Liber Decimvs Qvartvs & Decimus Sextvs, Poznań: Melchior Nering (printer), 1577 | Melchior Nering | Poznań | Letter | Latin | 8o | | Epistolarum liber decimus quartus et decimus sextus | 1 |
| [Pb645] | Friedrich von Heydeck, An den Hochwirdigen ... Herrn Walthern von Blettenbergk ..., Königsberg: Hans Weinreich (printer), 1526 | Hans Weinreich | Königsberg | Letter | German | 4o | | An den Hochwirdigen Herrn Walthern von Blettenbergk | 1 |
| [Pb610] | Jerome of Stridon, Epistole vulgare, Niccolò di Berto (translator), Ferrara: Lorenzo Rossi (printer), 12 October 1497 | Lorenzo Rossi | Ferrara | Letter | Italian | 2o | | Epistole | 1 |
| [Pb2763] | Stanisław Hozjusz, Letter of Stanisław Hozjusz to Carlo Borromeo | | | Letter | Latin | | | Letter of Stanisław Hozjusz to Carlo Borromeo | 1 |
| [Pb44] | Jerónimo Osório, Epistolografia, Sebastião Tavares de Pinho (editor), António Guimarães Pinto (editor) | Sebastião Tavares de Pinho, António Guimarães Pinto | Coimbra | Letter | Latin | | | Epistolografia | |
| [Pb2782] | Stanisław Hozjusz, Letter of Stanisław Hozjusz to Henry I of Poland | | | Letter | Latin | | | Letter of Stanisław Hozjusz to Henry I of Poland (1574) | 1 |
| [Pb2775] | Stanisław Hozjusz, Letter of Stanisław Hozjusz to Henry I of Poland | | | Letter | Latin | | | Letter of Stanisław Hozjusz to Henry I of Poland (2 June 1573) | 1 |
| [Pb2780] | Jerónimo Osório, Letter of Jéronimo Osório to Stanisław Hozjusz | | | Letter | Latin | | | Letter of Jéronimo Osório to Stanisław Hozjusz | 1 |
| [Pb2764] | Stanisław Hozjusz, Letter of Stanisław Hozjusz to Carlo Borromeo | | | Letter | Latin | | | Letter of Stanisław Hozjusz to Carlo Borromeo | 1 |
