@misc{_Stadtplan_[ca,
 copyright={Public Domain},
 address={Köslin [Koszalin]},
 howpublished={online},
 year={[ca 1936]},
 publisher={Litographie, Druck und Verlag von C. G. Hendess},
 language={ger},
 title={Stadtplan von Köslin},
 keywords={street maps, Koszalin street maps, 20th century},
}