Source images IDS 13920 GStA PK, XX. HA Hist. StA Königsberg, HBA, C 1a, K. 497, not numbered, unnumbered (Latin copy, 16th-century) 
Facsimile of the source from the collection of Geheimes Staatsarchiv Preussischer Kulturbesitz, XX. HA Hist. StA Königsberg, HBA, C 1a, K. 497, not numbered; copying, dissemination or publication in any form (including electronic) solely with prior written permission from the source's owner.
