Contains among other things: Trials of the Telefunkengesellschaft against the company Huth because of patent infringements, 1913 range attempts of the Telefunken-Gesellschaft from Nauen to Togo and Sayville (near New York), Nov. 1913 equipment of ships with radio stations, Dec. 1913 radio station of the Deutsche-Südseegesellschaft für drahtlose Telegraphie in Jap (Karolinen) and Nauru (Marshall Islands) in operation, Dec. 1913 radiotelegraphic length determinations between the stations Eiffelturm and Arlington, Dec. 1913. 1913 Wireless telegraphy in and with the German colonies (newspaper clipping of the "Hamburger Nachrichten"), 1914 patent situation in the field of wireless telegraphy, Jan. 1914 Safety of passenger transport by sea (memorandum of the German government), 1912 - 1914 Opening of the Danish radio station Blaavandshuk, 1914 International treaty for the protection of human life at sea, 1914 Range tests of Nauen with the "Cap Trafalgar" in the Atlantic Ocean, with maps, March - Apr. 1914 Minutes of the meeting of the committee for joint work in the field of radiotelegraphy, 14th Feb. 1914

Contains among other things: Project for the establishment of a company for the smelting of zinc, lead, antimony and sulphur in Tsingtau by the "East Asian Study Syndicate" (foundation of the companies Beer, Sondheimer und Co., Frankfurt/M.; Carlowitz und Co., Hamburg; Reimers und Co., Bremen), 1914 contract for the transfer of Tsingtau to the Japanese army (transcript), 1915 "The Chino-Japanese Negotiations. Chinese official Statement with documents and Treaties with Annexures, Beijing 1915 (print) Der Handel Tsingtaus vor und nach dem Kriege (publication of the Japanese military administration, copy), 1916 "Ist die Rückgabe Tsingtaus vom wirtschaftlichen Standpunkt notwendig oder zweckmäßig" (English version of a German memorandum), 1919 "Forderungen Deutschlands wegen Kiautschaos auf der Friedenskonferenz" (elaboration of the Reichsmarineamt, print), 1919

Contains: Superintendent Vosberg from Tsingtau about Japan; Sch. Gaev. about the general situation; Sch. Gaev. about Central Europe; Reichstag deputy bollert about naval battle at the Skagerrak; Secretary of State Posadowsky about the relationship with Russia; Professor von Liszt about arbitration agreement with America; Interview by Mc. Clure with Privy Councillor Dr. Breger; von Lossow, states at outbreak of war; v. Sch. Gaev. Interview with Ahmed Nessimi Bey, Constantinople, on trade and price relations; envoy Wolff Metternich on the causes of war; Geheimrat Deutsch on peace issues; Baron. E. von der Heydt on the outbreak of war; Privy Councillor Gneist, German Gesandschaft in The Hague on the Dutch-English treaty; Secretary of State Zimmermann on peace issues; parliamentary group meeting of the Progressive People's Party on the general situation; Professor Jäckh and Privy Councillor Meinecke on submarine warfare; Baron von der Ropp on United States; Graf Bernstorff, former ambassador to Washington on American sentiment; Graf Posadowsky on Russian folklore; Professor Jäckh on Turkey; Hecht, Noske, Zimmermann, Ricklin on the food issue; Naumann on Poland; Gothein, Deutsch, Haußmann on the general situation; State Secretary Zimmermann on peace issues; Dr. Stresemann on Reichstag resolution; parliamentary group meeting of the Progressive People's Party on general situation; Erzberger, Naumann, Rechenberg, Solf in the "German Society" on general situation in Central Europe; Reichstag delegate Marquard on rapprochement of the liberal parties; Gothein and Dernburg in the Central Committee of the Progressive People's Party on the general situation; communications of the American Odell and Dr. Altschul about Russia and the United States; Naumann inner and outer, war situation; Zimmermann about outbreak of war and submarine war; faction meeting: Naumann üner Austria, Haas, Gothein, Fischbeck, Wendorf; von der Heydt about pre-war situation; Graf Posadowsky about Poland; Professor Somary about Central Europe, Guttman about Austria, literature about Central Europe; Professor Jäckh about Turkey; Regierungspräsident Schwander about peace; K.E. Haenisch about social democracy