Source images IDS 21702 BCz, 1597, p. 905-910, p. 907 copy of letter of Sigismund I Jagiellon "ad Palatinos Prussiae" (Latin fair copy in secretary's hand, author's signature, 16th-century)
Facsimile of the source from the collection of Muzeum Narodowe w Krakowie, Biblioteka Czartoryskich, 1597, p. 905-910; copying, dissemination or publication in any form (including electronic) solely with prior written permission from the source's owner.