Contains:Annual reports, travel reports, sale of the mining company to the railway company (results of mining not very good, interesting handling of such a company), 1898-1914Darin:Participation in the Annener Gas-Gesellschaft due to sales and mining damage, 1906-20Inventar-Nummer: 070550031701Altsignatur: GBAG 16420Unternehmen/Institutionen:Schantung-Bergbau-Gesellschaft (Berlin); Schantung-Eisenbahn-Gesellschaft; Annener Gas-Gesellschaft

Handwritten report on the founding of the EMDOA on 26 October 1885; "Die Genesis der Deutsch-Ostafrikanischen Evangelischen Missionsgesellschaft, Werbeschrift, Druck, 8 p., 1886; Literaturhinweise zur Geschichte der Bethel-Mission, 1972, 1 sheet, ms.

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