Various excerpts from Carl Hugo Hahn's diaries and letters, thematically summarized typoscripts, probably by Dr. Heinrich Vedder in the 1920s:; Chronological Notes, 1841-1867; Kleine Notizen u. Briefaauszüge, 1844-1855; Carl Hugo Hahn u. d. Wesleyaner, 1844-1855; Missions-Kolonisation, 1863; Buren Immigration u. Augustineum, 1869; Die Friedenskonferenz zu Schmelens-Expartung (Okahandja), 1870; Wie Jonker Afrikaner mit d. Damaras geme gekommen, 1873; Heimreise, 1873; Correspondence with descendants of Carl Hugo Hahn, 1904-1943; copy of the doctoral diploma of the University of Leipzig for Carl Hugo Hahn (1874), 1954;

1868-1920 in Okahandja, Usakos; Reports & Letters, 1868-1918; Notes about the first baptism on Okahandja, Jan. 1873; Short history of: Jonker Afrikaner, as he met Damras, March 1873; station reports by Okahandja, 1888-1893; letters to and from missionary Peter Heinrich Brincker, 1888 1890; copy of correspondence with commissioner Nels u. Maharero Tjamuaha, 1890; Report of the Evangelist Elia Kandirikirira, 1891; Presentation: "Is it appropriate that Christians won by evangelists gather in parishes or return to their relatives", 6 pages, hs., 1891; Friedrich Wilhelm Gottlieb Viehe: Opinion on Herero land sales, 1887; Report on the increase in Herero's impoverishment through robbery, request for ideas from the German government, 1902; Reports on the Herero Uprising, 1904; Contract on the sale of land in Windhoek to the German tax authorities, 1904; Loss of property of the Mission and others, 1904; Contract for the purchase of the so-called "Borchard House" in Otjimbingue to Philipp Diehl, 1908; deed of donation of 5,000 marks from Philipp Diehl to Mission, 1912; congratulatory letter and laudatory speech for Philipp Diehl on his 50th ordination anniversary, 1918