Source images IDS 17545 BCz, 242, p. 6-10, p. 6 (Latin office copy autograph, in secretary's hand)
Facsimile of the source from the collection of Muzeum Narodowe w Krakowie, Biblioteka Czartoryskich, 242, p. 6-10; copying, dissemination or publication in any form (including electronic) solely with prior written permission from the source's owner.