Correspondence with the English Political Officer, 1917-1922; lists of German prisoners of war in thong, 1917; correspondence with German prisoners of war, especially with S. Delius, 1917; order of the District Political Officer for the deportation of Germans to South Africa resp. Egypt (print), November 1917; Korrespondenz mit Ehepaar R. u. A. Köstlin, formerly Kaiserlicher Bezirksamtsmann in Wilhelmstal, 1917-1918; Verordnung zur Rückführung der deutschen Zivilisation als Druck, December 1918; Statistik von Hohenfriedeberg, December 1919; Proklamation über die Repatriierung früherer Feinde, 16 p.., printed in January 1920; "Zur Weihe eingeborener Prediger 8 S., ms. von F. Gleiss, ca. 1920; 2 issues of "Tanga Post, 1919 u. 1920; 2 newspaper clippings on "Native Policy by speaker Owen in "The East African Standard, 1920
Bethel MissionCorrespondence (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
Bethel Mission