Korrespondenz; Prof. Haussleiter, Halle: Entwicklungsfragen d. Mission in unseren Schutzgebieten nach 25 Jahren dt. Kolonialarbeit, 1909; Jahrbuch d. vereinigten nordostdeutschen Missionskonferenzen, 124 S., Brandenburg 1910
Rhenish Missionary SocietyCorrespondence with church collections and church ministry of missionaries
Rhenish Missionary Society3 vol.; correspondence of the mission leadership with him
Rhenish Missionary SocietyManaging Director 1927-1948; Instruction, 1921; contract of employment as Managing Director, 1928; request for leave of absence due to membership of the NSDAP and the German Christians, 1936; correspondence with Praeses Brandenburger, Director Berner and Vice Praeses Schneider on personal and social matters. Geschäftsliche Schwierigkeiten, 1940-1951; Aktennotizen zum "Fall Kobusch" by Präses Brandenburger, 1945; Pensionsangelegenheiten, 1950; Todesanzeige, 1955; Correspondence with wife Adele, 1963-1968; Todesanzeige f. Adele Kobusch, 1969
Rhenish Missionary Society