Documents, photographs, witness statements, films and all sources systematically collected by Porta Polonica are digitized and recorded in a database.
Fig. 5: Three letters
John à Lasco/Jan Łaski: Epistolae tres lectu dignissimae, de recta et legitima ecclesiarum benè instituendarum ratione ac modo: ad Potentiss. Regem Poloniae, Senatum, reliquos[que] Ordines, Basel 1556