Source images IDS 21949 BCz, 245, p. 279-280, p. 279 (Latin rough draft autograph) 
Facsimile of the source from the collection of Muzeum Narodowe w Krakowie, Biblioteka Czartoryskich, 245, p. 279-280; copying, dissemination or publication in any form (including electronic) solely with prior written permission from the source's owner.
