Correspondence on missionary activity in East Africa; Memorandum "The Relations of the Bethel Mission to Rwanda by Curt Ronicke (?), 26 p., ms., 1932; Reports on Living Conditions in Internment Camps and Letters from Internees, 1939-1944; Settlement of Grants for the Hospital in Bumbuli, 1963

Health Certificate, 1927; Vow of Deputation and Instruction, 1928; Correspondence (also with Luise Seidel, his bride), 1928-1930; Briefe u. Reports from Bumbuli, 1928-1939; Photos from the carpentry workshop in Bumbuli, 1930; Medical certificates for the Schelp family, 1940-1942; Obituary for Gustav Schelp, 1950; Correspondence with the Schelp couple, 1940-1950; Correspondence with Mrs Schelp, 1950-1968

Correspondence, 1933-1965; Instruction and personnel questionnaire, 1936; Medical report for Käte Hamann, teacher in Lwandai, 1937; Report on "Medical Missionary Council in Dar-es-Salaam, July 1938; Annual reports of the Mission Hospital in Bumbuli, 1938-1939; "Die Aussätzigen in der Bethel-Mission, 1939; Letters from the internment camps Andalusia and Salisbury, 1940-1947

Reports, letters and accounts

Reports, letters and statistics