Source images IDS 21570 BCz, 245, p. 191-194, p. 191 letter (Latin fair copy autograph, 16th-century) 
Facsimile of the source from the collection of Muzeum Narodowe w Krakowie, Biblioteka Czartoryskich, 245, p. 191-194; copying, dissemination or publication in any form (including electronic) solely with prior written permission from the source's owner.
