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Contains:B. Ankermann, Berlin. The natives of the grassland of Northwest Cameroon; 11.03.1910 W. Volz, Wroclaw. The Bataker North Sumatra; 18.11.1910 Alfred Zintgraff. Abyssinian Emperor and People; 17.01.1911 A. Kraemer, Bannow (Stuttgart). Neu-Mecklenburg after own studies; 03.04.1911 R. Neuhaus, Berlin. German New Guinea; 27.10.1911 J. Elbert, Frankfurt. Research in the eastern Malay archipelago; 10.01.1912 Erland Freiherr von Nordenskiöld. My journey among the Indians of Bolivia; 19.04.1912 Duke Adolf Friedrich von Mecklenburg-Schwerin. The German Inner Africa Expedition 1910/11; 29.04.1912 Felix Speiser, Basel. Research trips in the New Hebrides; 05.12.1913 O.D. Tauern. Land and people of a Moluccan island; 18.02.1913 Leo Frobenius, Berlin. From Ethiopia to Atlantis; 10.01.1913 L. Schermann, Munich. Ethnological observations in Hinterindien; 09.01.1914 by Le Coq., Berlin. Cultural currents in Central Asia; 27.11.1925 Old signatures: 256.

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