Statistics listing the tribes under treatment, 1928-1931 and 1939; General Correspondence, 1961-1969; Monthly and Annual Reports, some minutes of Executive Committee meetings, 1961-1970; "Bringing Better Health to Bumbuli by Robin Peters - newspaper clipping from "The Standard, March 1965; Various Building and Construction Reports". Extension projects; Hospital-Kapelle, 1964-1965; Medical-Technical Equipment, 1961-1965; Repair of old buildings, Digo project with building plans on a scale of 1 : 100, 1964-1970; Extension of the hospital, 1965-1968; New construction of Dispensary Mtimbwani with building plan, 1964-1968; NED project: Diesel engine and water supply, 1969-1970

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