"Inexhaustible wealth, Africans report on their journey to Jesus, 30 p., 1939; obituary of Martin Personn (son), 1939; The districts of Wuga and Bumbuli in the war (towards the end of 1939); deed of ownership of the burial place of Martin Personn in Bethel, 1942; map of Usambara and Buhaya, n.d. ; A walk through the parishes of Usambara and Tanga-Digo today, 8 p. ms.., 1958; death announcement by Hermann Personn, 1960; correspondence with Marie Personn (wife), 1961-1965
Bethel-MissionPersonalia, 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
Bethel-Mission