Tropenzeugnis, 1935; Dienstanweisung u. Abordnungsgewöde, 1936; Korrespondenz u. Berichte, 1935-1965; "Hekalungu - Report on a station for lepers (= people suffering from leprosy), 1938; contract between the Bethel Mission and the Bible house Malche because of Erna Weyland, 1942

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.

Correspondence and Reports, 1931-1968; Curriculum Vitae, 1931; Service Instruction and Vow of Delegation, 1932; Versorgungsangelegenheiten, 1937-1986; Ordnung für die äußere Stellung der Missionsarbeiter der Bethel-Mission, December 1930 version; "Neue Ordnung, November 1933 version

Correspondence, memoranda, circulars; reports on the Bethel mission

Correspondence on school issues, health care, reconstruction of Lwandai, printing works in Wuga etc., 1925-1927; monthly accounts, 1926; budget estimates, 1927-1928; conference protocol Mlalo, January 1927; oldest meeting of January 1927; status report on mission work(s) in Usambara by E. Johanssen, 1925; reports on the Bethel mission in "Dresdner Anzeiger, October 1927