Offer of the Regierungsrat Dr. Ruland, Cologne, concerning subscription of colonial literature Ajouter au presse-papier NLA HA, Dep. 105, Nr. 471 Dossier 1914 - 1914 Fait partie de Lower Saxony State Archive, Hanover Department In: Lower Saxony State Archive, Hanover Department >> Company archive and estate of Bernhard Sprengel