Walvis Bay s. a. RMG 2.531 a b; View of the station (pencil drawing) and site plan, 1904 (?); annual and conference reports, by Karl Alex. Hamann, Heinrich Vedder, Wilhelm Eich, August Wulfhorst, Heinrich Johann Brockmann and Friedrich Wilhelm (Fritz) Mayer, 1905-1939; Visitation Reports, 1906 1909; Disputes Heinrich Vedder with Commander Selkmann and K. Ritter, Wörmann Line, about captured Hereros, 1906; Ferdinand Lang, Annual Report on Tsumeb, 1909; August Wulfhorst and Fritz, 1909 Martin Jonas Werner, Annual Reports on Otjimbingwe, Karibib and Okahandja, 1921; Heinrich Johann Brockmann, private letters to Director Johannes Warneck, Superintendent Hinrich Johannsen, Director Hermann Berner, 1932-1939; Reports on Nursing Work, 1939

1895-1937 in Otjimbingue, Karibib, Praeses and Inspector from 1910; Letters and reports (Presidential files separate), 1895-1910; application for missionary service, curriculum vitae, expert opinion Johannes Georg Heinrich Olpp, 1894; private letters to Inspectors d. RMG, 1895-1899; Instruction for Johannes Georg Heinrich Olpp, 1895; Report on Franz Heinrich Kleinschmidts Death in Otjimbingue, 1896; Overview of the Mountain Damra Church in Otjimbingue, 1896; What drives for faithful work in the mission can the biblical teaching of Christ's Second Coming grant us? Lecture, 12 p., hs., 1898; Lieutenant Kuhn to inspector because of missionary for Karibib, 1901; property case Redecker with sketch, 1904; holiday application Johannes Georg Heinrich Olpp, 1907; plan about Biblical history education to be mastered in the schools, Otjimbingue, 1908; private correspondence from and. with Johannes Georg Heinrich Olpp (partly from the estate), 1928-1948; correspondence with Maria Olpp, née Johannsen (also curriculum vitae and death certificate), 1948-1961; Olpp translated the book "Eine Reise durch Afrika", by J. Du Plessis, 1916, from the Netherlands into German, under the signature 1-02812 in the holdings of the Archive Library ;

1898-1945 in Okazewa, Otjimbingue, Omburo, Omaruru, see RMG 1.482 estate; letters and reports, private letters, 1898-1945; curriculum vitae, application, certificates, recommendations, 1892; seven weeks under d. Insurgent Hereros, report, March 1904; marginal notes on the Herero War, critical statement, May 1904; Our Herero Christians in the War Camps, May 1904; The Lie in the Herero War, June 1904; August Kuhlmann's request for pardon from the Hereros, reply by Trothas to this, Febr. 1905; Report about peace mediation attempts in Otjimbingue, Febr. 1905; Supplements to "Windhoeker Nachrichten" with attacks against mission, June 1905; Report about the prisoner on the shark island near Lüderitzbucht, Aug. 1905; Report about the work in Karibib and at the prisoners of war at the Otavi Railway, Aug. 1905; Reports from the collection camps for Hereros in Omburo, 1906; leaflet "Three Christmas in German Southwest Africa", Dr., 1904-1906; Lecture: "What can and must happen to follow the scattered heathens and Christians", 11 p., hectographed, 1909; Lecture: "Zur Psychologie d. Glaubenslebens unserer afrikanischen Christen", 14 p., ms., 1913; Lecture: "Das Problem d. christlichen Ehe unter d. afrikanischen Heidenchristen", n. J.; Correspondence with Mrs. Elisabeth Kuhlmann, née Dannert u. Familie, 1946-1965

Minutes of the Annual Meetings; Annual Accounts, Correspondence with Rosary and Genius; Statutes of the DGfM, Dr., 1918 1960; C. Mirbt: German Society for Missiology, 7 p., Dr., 1918; The catechumenate in the RMG churches in; Southwest Africa by F. Pönnighaus, Karibib, 1951; New Guinea until 1930, N.N.; China, W. Grundmann, 1951; Sumatra, H. Berghäuser; Mentawai Islands, R. Smidt, 1951; Rosary: German Society for Missionary Science, 8 p., Dr., 1957; list of members, as of 1957