1953-1967 in Okahandja, Karibib, then parish office; Correspondence, (1940-1945 from the field), 1932-1966; Curriculum vitae, application, references, 1932; My hometown, (Isingdorf bei Werther), essay, 1933; correspondence with LKA for Julius Baumann's admission to the 1. theological exam, 1949; circulars from Milly Reiser (Baumann's mother-in-law), from Julius and Hanna Baumann, 1956-1965

1900-1914 in Otjimbingue, Karibib, from 1915 parish office in Germany, among others in Bergkamen i. W.; letters and reports, 1900-1914; curriculum vitae, various application letters, medical certificate, 1893-1895; correspondence with August Elger, 1916-1968; death announcement for Mrs. Adele Elger, née Jansen 1948; death announcement for August Elger, 1968; cf. a: M. Wilckens, August Elger and others. Ex.arbeit Kiel 2006 => Library 2-6012

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

Correspondence, expert opinions, calculations; minutes of the board meeting in Karibib, 1938; newspapers: ; "S.W. Persianer-Markt", 3 issues, 1937; "Der Karakulzüchter", 4 issues, 1937-1938; "Die Lederindustrie", No. 51, 1938;

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

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 ;

1921-1954 in Windhoek, Okahandja, Karibib, director of the Paulinums; correspondence, circulars, travelogues, essays, 1921-1938; curriculum vitae (2 versions), application, certificates, 1906-1908; medical testimony for Mrs. Martha Pönnighaus, nee. Brünger, 1920 From the Women of the Paulinum Disciples, by Martha Pönnighaus, 1951; Statistics on our Evangelists and Pastors in Southwest, 1953; Letters from Fr. Josua Tjiurutue and Fr. Hendrik Isaak, 1956; Let us save you! Mission game from Southwest Africa, by Mrs. Martha Pönnighaus, without year; correspondence by Friedrich Pönnighaus. Martha Pönnighaus with Gustav Menzel, missionary Fritz Heinrich Ludwig Harre and Inspector Gustav Weth, 1954-1966; Zur Vita von Herr Missionar Friedrich Pönnighaus, ca. 1966; answer to the questionnaire of the German Protestant Mission Day, concerning e. g. station Okahandja, 11 p.., ms, c. 1935; Heranbildung d. Diener am Wort, essay, 14 p., hs., c. 1939; copies from letters by Friedrich Pönnighaus from war and imprisonment, 1939-1945; correspondence Friedrich Pönnighaus with Dr. Hans de Kleine, 1962-1968

nach d. Tod ihres Gatten Wilhelm Karl Stahlhut 1900 blieb sie als Missionsschwester in Namibia: Ondjiva, Windhoek, Karibib, Tsumeb, vgl. RMG 1.633; Briefe u. Berichte, 1904-1931; Instruktion, 1907; ärztliche Befundberichte, 1933; Lebensdaten  u. kurzer Nachruf, 1933; Antwort auf Anfrage e. Neffen (enthält als Anlage d. Nachruf für Missionar Wilhelm Karl Stahlhut, gest. 1900), 1938; Arbeitsberichte von Schwester Lina Stahlhut, geb. Rohde aus Windhoek, Karibib u. Tsumeb, 1925-1933;

1890-1930 in Ondjiva, Omupanda, Karibib, Swakopmund, Präses d. Ovambomission, estate see RMG 1.627; extensive correspondence, annual, station and travel reports, 1890-1936; travel report by Thusnelda Wulfhorst, née. Härlin, 1892; Private letters from August and Thusnelda Wulfhorst, née Härlin to Inspector Johannes Wilhelm Karl Spiecker, 1890-1900; "Osondahe", Monatsblatt d. Finnish Mission, May 1909; Correspondence with the German Consulate and Portuguese authorities concerning property claims in Omupanda, 1920-1927; Obituary for August Wulfhorst by Johannes Georg Heinrich Olpp, 1936; Correspondence with his 2nd wife, Johanna Wulfhorst, née Härlin, 1937-1956