Reise- u. Arbeitsberichte von E. Johanssen, 1925-1928; "Wieder auf dem alten Arbeitsfeld in Ostafrika, 1925; "Zur Erziehungskonferenz von Usambara nach Dar-es-Salaam 13 p., ms., 1925; "Meeting of indigenous priests in Mlalo, 1925; Reports and letters by Johanssen, Mörchen, Gleiss, Dr. Kröber, Hosbach, Scholten, Hagena and others, 1929; Report on Lutindi von Nickel, 1929; Reports by women on women's fates and women's work in Buhaya (see table of contents in the file), 1929
Evangelical Missionary Society for German East AfricaCorrespondence, reports and health reports about the mission members living in Africa, 1926-1938; Instructions and vows, 1928; Pictures from the medical work in Bukobalande, 10 p., ms.., 1929; "Im Auto um den Viktoriasee, 1930; "Aus der Hospitalarbeit in Kamachumu, 1931; "Reise nach Rwanda, 17 S. ms., 1931; "Einer der Reichen im Lande (A funeral celebration), 1934; "Etwas vom Alltag, 19 S., ms., 1934; "Inderpraxis in Afrika, 9 S. ms, 1934; "Ärztliche Mission u. Regierung, 9 S. ms., 1936; "Ärztliche Mission u. Volkstum, 16 S. ms., 1936; decision of the church assembly of Buhaya to give Doctor Kröber the honorary name "Mujunangoma(= saviour of the people), 1937; testimony for Doctor Kröber, 1938; report on the work of Doctor Kröber in the service of the Bethel mission, 1938; correspondence with Doctor Kröber in Kirchen an der Sieg (also in the field) and with his family, 1938-1978; obituary for Maria Kröber, née Augustin, 1978
Evangelical Missionary Society for German East AfricaEssays, memoirs, travel and activity reports from medical work (with photos), 1928-1938; "Über vierzig Jahre danach - ein Bericht über eine Afrika-Reise, 1979; Correspondenz wegen der Übernahme der Manuskripte ins Archiv, 1987
Evangelical Missionary Society for German East Africa