Personalia, licence of registration, certificates, curriculum vitae, 1925; instructions and vows of secondment, 1926; correspondence, reports, etc., 1925-1937 and 1955-1970; travel diaries and reports, also by Marie Müller, née Grießbach and circulars from Bumbuli, 1926-1937; photo of the hospital staff, 1929; house rules of the Bumbuli-Hospital (print), 1929; attacks by Doctor Fregonneau against the activities of Doctor Müller, newspaper campaign u. Korrespondenz, 1933-1934; Auseinandersetzung Deutscher Bund in Ostafrika, allem wegen Schulfragen, 1934; "Grundsätzliches zur Missionsarbeit in Usambara, 12 p., ms. 1934; correspondence from the office of the president concerning Doctor Müller, 1935; "On the financial statements 1934 of the printing works in Wuga by O. Joppe, 1935; 2 newspaper clippings with reports on lectures by Samuel Müller, 1937; "My son Mika von Samuel Müller, 1937; "Basic information on mission work in Usambara by Samuel Müller and statements thereon; activity reports 1934-1937

Medical questionnaires for Heinrich Waltenberg and Hildegard Bokermann (his bride), 1929; vows of the Evangelischer Afrikaverein for Heinrich Waltenberg, 1930; correspondence, reports and stories, also by Hildegard Waltenberg, 1930-1946; "Meine Ferienreise durch Usambara im Jahre 1947, 26 S., ms.; Accounting

Memorandum concerning the German school in Mlalo, 1910; Statuten der Schule, 1910; Chronik der Schule, 1908-1918; Korrespondenz, 1928-1939; Festschrift zur Einweihung der Friedrich-von-Bodelschwingh-Schule in Mlalo (Lwandai) with photo, 1931; Baupläne der Friedrich-von-Bodelschwingh-Schule, 1930; Festschrift zum 25-jährigen Jubiläum der Schule, 8 pp, Druck, 1933; Founded and first plans of the German Confederation, local group Usambara, March 1934; "School dispute mainly because of the so-called "racial question and correspondence on this, 1934-1935; "30 years Friedrich von Bodelschwingh School, 1938; "The Decades German School in Mlalo (Lwandai), 1938

Correspondence, 1928-1971; "The beginning of a kindergarten in Mlalo, 1933; Friends letters, 1949-1950; photo by Frieda Wohlrab and Pastor Hermas, 1952; correspondence by F. Wohlrab, Anna Wohlrab and Agnes Rösler with Hans-Arnold Scholten, also circular letters from Lwandai/Lushoto, 1971-1979; medical report for F. Wohlrab, 1973; "Holzmission in Usambara, 1978

Recordings from the years 1901 to 1903" Contains handwritten names: Dar-es-Salâm (coral reef and harbour), sultan palace in Kilwa-Kisiwani, waterfalls of the Pangani river, coffee plantations, rainforest and mission stations in Usambara, glaciers and landscape formations of Kilima-Ndjaro, African steppe, locals, especially Massai