Source images IDS 19668 BCz, 244, p. 17-19, p. 17 (Latin rough draft autograph)
Facsimile of the source from the collection of Muzeum Narodowe w Krakowie, Biblioteka Czartoryskich, 244, p. 17-19; copying, dissemination or publication in any form (including electronic) solely with prior written permission from the source's owner.