Missions-Handwerker u. Farmer, 1907-1913 in Usakos, Grootfontein, Gaub, Korab, Omaruru, Outjo; Letters and Reports, 1908-1913; Correspondence in the dispute August Heinrich Johann Dresselhaus, 1914-1923; Court Acts August Heinrich Johann Dresselhaus ./. RMG, 1921; Instructions for August Heinrich Johann Dresselhaus, 1907 1912; Zeugnis d. Agricultural Winter School Vohwinkel, 1914; Curriculum Vitae, 1906;

1877-1913 in Grootfontein, Warmbad, Rietfontein; Letters and reports, 1877-1916; Curriculum vitae of the aspirant Heinrich Pabst, Schuhmacher, 1872; sketch of the Kalahari and its inhabitants, lecture at the conference on Keetmanshoop, 20 p., 1895; request of Margarethe Buß for a birth certificate, 1942;

The Bushmen, Heinrich Vedder, 18 p., ms., 1912; Report on the Bushmen and thoughts on their future, by Th. Wetschky, Grootfontein, 1913; 2 newspaper clippings on the Bushman question in Grootfontein, 1913 1914; The Bushmen, Result e. Interrogation, by Friedrich Pönnighaus, 11 p.., ms., Ill., 1926; The Bushmen in North Southwest Africa, N. N., 7 p., hs, under the Bushmen in South West Africa, Alfred Unterkötter, 10 p., ms., o. J.; I will exterminate the wizard with you, Alfred Unterkötter, 14 p., ms., o. J.; Experiences between Operet and Onguma, Alfred Unterkötter, 4 p.., ms, no year; Self-biography of the Bushman //Kou-goa-//ob, Alfred Unterkötter, 13 p., ms, no year; Among the Bushmen of Southwest Africa, Alfred Unterkötter, 9 p., ms., no year;