汉萨同盟
In 1594, the records of the Bruges offices of the Hanseatic League (then stored in Antwerp) were transferred to the Cologne archives. These records included copies of the protocols of the diets of the Hanseatic League. With the 1594 transfer, the Cologne archive became the most important repository of historical material concerning the Hanseatic League and thus concerning the history of Northern Germany in general, only matched by the municipal archives of Lübeck.