Letters from Joel Kibera to Bertha Johanssen, 1930-1932; letters from Joel Kibera to Ernst Johanssen and Curt Ronicke, 1930-1933; letters to Ernst Johanssen from various senders, including by Alexander Kielima, Josua Hermas, G. A. Kajejero, Jakobo Ngombe, Kamara Kalembo, Andrea Kyaishozi, Petero Habugumisha, Yakobo Kajuma, Ernest Kalembo, Yuhi Musinga, Kamanzi, Saulo Kagya, Yusufu Hiliyai, and many more.., 1927-1933; Letters from local Christians translated into German, among others by Joel Kibira, Josua Hermas, Jakobo Ngombe, Lukas Sefu, Andrea Kajejero, Abel Mutungudja, Samuel Stepke, 1922-1934; transcriptions and replies, 1922-1934; travel diaries "Safari ya Bukoba Heft I u. II, 1929-1930; 2 booklets Grammatische Übungen, 1932

Letters to teacher Küchler from Lutindi, especially from Katakula 1899-1902, Mjomba, 1901-1902, Samuel Stepke, 1901-1902; Letters to Missionary Rösler especially from:; Lazalo Shauli, also diaries and other articles Hosbach's statements on Shaulis death, 1905-1923; Silas, 1905; Tito Hiza, n.d. ; Mfuzi Solomo, 1915; Mfuzi Daudi, 1916; Jeremias Kika, 1915; Job Kunyonga, 1914; Luka Sefu, 1914 u. 1918; Johana Mtungasi, 1913; Ruben Mutangi, 1914 and 1916; Enea Mutunguja, 1914 and 1917; notes by Jakobo Ngombe on experiences during and after the war, 1914-1923; letters by Jakobo Ngombe to Hosbach and Gleiss, 1925-1927; letters to Missionary Gleiss and student essays, 1921

Provisions on work cards for local workers, 3 p. as print