Essay "Die Werbearbeit der Bethel-Mission, (presumably 1920-er Jahre), 16 p., N. N.; advertising material of other mission societies; member card Bethel-Mission e. V.

Committee of German Missions, invitation to the Continental Mission Conference of 1893; Reformed Confederation; Mission Conference Brandenburg; German Protestant Mission in Japan; Protestant Association of Africa - founding call and statutes; Academic Association for External and Internal Mission - Semester Report and Statutes; Work Report of the Mission Society Berlin