Correspondence with members of the Kolonialverein and the Kolonialgesellschaft on colonial issues and matters of the society (board elections etc.) with Richard Jakob, Berlin; Graf Stolberg-Wernigerode; Otto von Tettenborn, Colonel (retired), Dresden; Paul Zilling, Stuttgart; Prof. H. Wagner, Göttingen; Prof. Ratzel, Munich; Richard Lesser, Berlin (Deutsche Kolonialzeitung); Livonius, former vice admiral; Graf Hatzfeld-Trachenberg; Dr. M. Lindemann, Bremen; Count Behr-Bandelin; Admiral von Werner; Eighth Deutscher Geographentag-Freiherr von Richthofen; Prince zu Wied-Neuwied; Prof. W. Detmer, Jena; G. Schweinfurth; R. v. Bennigsen, Hannover and others.
