Source images IDS 18056 BK, 230, p. 57-60, p. 60 (Latin fair copy in secretary's hand, author's signature, 16th-century)
Facsimile of the source from the collection of Biblioteka Kórnicka Polskiej Akademii Nauk , 230, p. 57-60; copying, dissemination or publication in any form (including electronic) solely with prior written permission from the source's owner.