Correspondence (s.a. M 270), 1896-1897; correspondence, reports, diary excerpts (s.a. M 273) from 1906; Easter sermon in Hohenfriedeberg, 1914; "Vom Schulbau in Mutindili, 1914; Letters by Elfriede Kraemer (stepdaughter of Hosbach) to the Trittelvitz couple, 1912-1914; Hosbach's letters from prisoner of war in Egypt, 1917-1919; "Paulo Shempahila - Lebensbild eines einheimischen Gehilfen, 1919; 3 Songs in Swaheli (Text u. Sheet music by Martha Hosbach), 1927; Letters and reports by Martha Hosbach from 1926; "Die Schule von Kijunga von Josua Hermas, translated by Wilhelm Hosbach, 1932; Jahres-, Konferenz- u. Schulberichte von Bukoba, 1932; Gutachten zur Wasserversorgung in Kigarama, 1932; draft: "Integration of the mission into the German Protestant Church of Knak; "Neue Ordnung für die Missionsarbeiter der Bethel-Mission, 1933; "Ein Wort Dankbarer Erinnerung an Frau Künzel, 1934; Correspondenz während des 2. 1939-1949; letter from an African teacher to Wilhelm Hosbach, 1949; correspondence with the Hosbach couple at home, 1949-1961; obituary for Martha Hosbach, widowed Kraemer, née Wegener; obituary, obituary and memories of Wilhelm Hosbach, 1964

Contains among other things: Distribution of troops in South West Africa

Contains among other things: Partial map of the South West African colony with drawings of reserves, M.: 1:2 000 000 C. Schlettwein, Germany's previous colonial policy and the current conditions in German South-West Africa. Berlin 1904 dispatch of the Naval Expeditionary Corps and experience gained in South West Africa. Memorandum by Colonel Dürr of Sept. 1904 List of whites against whom in the years 1902 - 1904 proceedings for violence against natives were instituted before the District Court of Swakopmund.

Contains among other things: The Rhenish Mission and the Herero Uprising. Barmen 1904

Contains among other things: Karl v. Oppell - Cape Town, Can infectious diseases be eradicated in the capitalist state? Karl v. Oppell - Cape Town, Die akademischen Führerinnen etc. at the Social Democratic Women's Assembly in Munich 1902 Karl v. Oppell - Cape Town, Zur Wahlagitation, 1. Das Zentrum, 2. Die Einseitigkeit und Kurzsichtigkeit aller übrigen Parteien. Berlin (before 1904)

Contains among other things: Establishment of wages for the local population.

Contains among other things: Report on the Amboland and its occupation (around 1904).

Contains among other things: White Paper on the branches of the Rheinische Missionsgesellschaft in Hereroland and on Angra Pequena. Bernhard Schwarz, The Truth About The Damara Land Affair.

Enthält u.a.: Bevölkerungsstatistik vom 1. Jan. 1913 Union of South Africa. Report of the Administrator on the Bondelzwarts Rising. Cape Town 1922 Report into the rebellion of the Bondelzwarts. Cape Town 1923