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;

1907-1936 in Karibib, Keetmanshoop, Okahandja, Windhoek; curriculum vitae, references, application, 1901; correspondence and work reports by Christian Ludwig Kühhirt, 1907-1958; correspondence also with Mrs. Elisabeth Kühhirt, née Wangerin, 1938-1969; correspondence also with d. Söhnen Kühhirt, 1940-1959; report e. Reise zu d. Herero in the reserve, (pale-grass), 1920; report about the journey to the Herero and Ovambo to the railway, 1920; Farmmissionsreise, 1925; newspaper article by Martin Kühhirt (son): "Das ehemalige Deutsch-Südwestafrika unter englischer Verwaltung", IN supplement of the "Aufwärts" of 30.09.1928; death announcement, sermon, obituary for Mrs. Helene Kühhirt, née Schubert, 1936; Der Heimgang unserer Mutter, Georg Kühhirt (son), 1936; Theofilus Ileka, evangelist: Letter to Christian Ludwig Kühhirt with greetings from the Ovambo parish Windhoek, 1936; travel report by Elisabeth Kühhirt, née Wangerin, 7 p. ms., 1938; copies of testimonies by Elisabeth Kühhirt, 1917, 1928, 1938; obituary for Christian Ludwig Kühhirt, 1959