@misc{Koch_A._Rys._Plan_1808,
 author={Koch, A. Rys.},
 copyright={Public Domain},
 address={Danzig},
 howpublished={online},
 year={1808},
 publisher={in der Troschelschen Buchhandlung},
 language={ger},
 title={Plan des Territorii der freien Stadt Danzig},
 keywords={street maps, Gdańsk street maps, Gdańsk, 19th century},
}