Private letters, 1890-1893; travelogues, diary notes, correspondence with Trittelvitz, 1905-1914; manuscripts, fragments, diaries, etc.: "The first visit of German children to Queen Msinga of Rwanda, "Back to Queen Msinga, "Observations on the Characteristics of Natives, 1907-1908; General Correspondence and Monthly Reports, 1927-1929; Bugufi calls us - Bugufi needs us, 1929; Letter of Native Christians from Bukoba to the Bishop of Central Tanzania, 1929; Impressions and thoughts during a journey into the landscapes of Mischenye u. Karagwe, 1929; Questionnaires with personal data and birth dates of 14 children, 1930; "Church Mission Society u. Bethel-Bielefeld Mission in Bukoba, German and English version by E. Johanssen, 1930; Correspondence with E. Johanssen, 1930-1933; death notice and memorial certificate, 1934; correspondence with Martha Johanssen, 1934-1940; "On the 100th birthday of E. Johanssen, 1964; "On the 100th birthday of E. Johanssen, by J. Busse, with the addition of Albrecht sen.., 1971

Curriculum vitae, instructions and vows, 1932; correspondence and reports, 1932-1977; "In den engemu (Bananenstauden), 1934; "Die Nachmittage im Dorf, 1935; "Six days of work, 1935; "Karagwe in Not, 1936; "Von Kindern u. 1938; medical findings, 1944 and 1962; circulars to Afrikabund sisters, 1947-1968; membership card of the Sarepta-Afrikabund sisters, 1949; "Bishop's Introduction and Conference in Bukoba, 1961; "Off to Rubisho, 1961

Correspondence and newsletters for siblings; "Über drei Meere unter der Hwenkreuzfahne, Zeitungsartikel erschienen in "Aufwärts Nummer 69