Riegel, Christoph,  Swidde, Willem,  Dahlbergh, Erik Jönsson, greve,  and Pufendorf, Samuel, Freiherr von.  "Accurata delineatio regionis circa Nieburgum Fioniæ cum prælio ibi commisso inter Danorum et fæderatorum exercitum ab una et Copias Suecicas in ea insula agente ex altera parte die 14 Novemb. 1659."  Print.  1696.  Norman B. Leventhal Map & Education Center,  https://collections.leventhalmap.org/search/commonwealth:ht2502705 (accessed January 29, 2022).