Georg Friedrich Karl Koppmann (24 March 1839, Hamburg – 25 March 1905, Rostock) was a German historian, archivist and an authority in the field of German municipal history, particularly in the Hanseatic League.
Author: Unknown, not menioned anywhere Source: Stadtarchivar Dr. Karl Koppmann zu Rostock †. In:Vaterstädtische Blätter , Jahrgang 1905, Nr. 14, Ausgabe vom 2. April 1905. License:
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