Teacher 1898-1901, 1901-1904 Priest in Dhünn, 1905-1934 Superintendent in Essen, 1934-1946 Africa-Dezernent; testimony about teaching in the missionary seminar, 1901; private correspondence, 1917-1948; letter by J. Olpp from Swakopmund, 1935; correspondence with Dr. Albert Schweitzer, 1928-1933; What the church owes and owes to the Outer Mission, o.J.; death announcement "29.10.1950; Akten der Waldthausen-Stiftung, Essen, 1927-1930; Akten der Druckerei Gemeinwohl, Essen, 1935; Construction drawings of the houses Uhlandstr. 4 and Dreilindenstr. 71, Essen, 1908;[Questions of the local mission organization, lecture, 1929 see RMG 625].

large drawing of the church in Walvis Bay by J. C. Pingel, c. 1910; plans for the reconstruction of the mission station, by Ludwig Koch, agent of the RMG, no year; statistical questionnaire, 1946-1969; correspondence for the church in Walvis Bay, 1960; thanks to Kirchengemeinde Bielefeld for donation to the kindergarten, 1965;