Reports by Doctor Frobenius, A. Hoffmann, W. Diehl, A. Wullenkord, G. Eiffert and others; Situation plan of Bogadjim, 1909; "Gründung u. Entwicklung der Station Bogadjim", 13 p., ms., by W. Diehl, 1912

Reports, letters and accounts

Reports, letters and statistics

Reports and Letters, 1907-1914; Map sketch of the Annunciation Journey through Digoland by Franz Gleiss, February 1911

Letters and reports (originals) by Langheinrich, Winkelmann, Johanssen and Wohlrab

Letters and reports (originals and copies) by Langheinrich, Döring, Holst, Johanssen and Wohlrab; design of an altarpiece for Hohenfriedeberg on a scale of 1 : 10, about 1900; map sketches of the Hohenfriedeberg mission district, 1909

Letters and reports by Boye, G. von Bodelschwingh, Holst u. N. Rösler; inventory of the House of Johanssen, 1908; programme and minutes of the annual conference in Mlalo, 1912; programme of the annual conference in Bungu, 1911

Letters and reports by E. Johanssen and H. Röseler

Letters and reports (originals and copies) by Wohlrab, Becker, Langheinrich, Gleiss, Döring, Roehl and Ruccius among others

Letters and reports from Boye, Nathanael and Ottilie Rösler

Letters and reports from Wohlrab, Becker, Langheinrich, Gleiss, Döring, Roehl, Boye, Rösler and Ruccius among others

Letters and reports by E. Johanssen, 1912-1914; "We would like to see Msinga by H. Röseler, 1913

Letters and reports about the beginnings of work in thong