Prussian State Archive Königsberg

For centuries the archive was held in the oldest part of Königsberg Castle, the western north wing.

Other archivists included Friedrich Adolf Meckelburg, Rudolf Philippi, Erich Joachim, Hermann Ehrenburg, and Paul Karge.

Most of the collection, including its most valuable documents, were evacuated from Königsberg before the end of World War II and stored in a salt mine at Grasleben.

The evacuated Königsberg collection, about 85% of the pre-war documents, has been in the possession of the Prussian Privy State Archives in Berlin since 1979.

Other documents from the original collection which were not evacuated are in the possession of the Archiwum Państwowe w Olsztynie in Olsztyn, the Wroblewski Library of the Lithuanian Academy of Sciences and Lithuanian Central State Archives [lt] in Vilnius, and the Gosudarstvennyj Archiv Kaliningradskoj Oblasti in Kaliningrad.