@misc{_Plan_1886,
 editor={Gdańsk (Prusy). Stadt-Geometers Block},
 copyright={Public Domain},
 address={Danzig},
 howpublished={online},
 year={1886},
 publisher={Eigenthum und Verlag von Richard Bertling},
 language={ger},
 title={Plan von Danzig},
 type={Image},
 keywords={street maps, Gdańsk, Gdańsk street maps, 20th century},
}