Prussian Privy State Archives
Lugar
The Secret State Archives Prussian Cultural Heritage Foundation (German: Geheimes Staatsarchiv Preußischer Kulturbesitz or GStA PK) is an agency of the Prussian Cultural Heritage Foundation headquartered in Berlin, Germany. A Federal statutory body, it is one of the largest repositories of primary source documents in Germany and spans the history of Prussia, Brandenburg, the House of Hohenzollern and the Prussian Army.