Letters of the ship's doctor Dr. Alfred Abenhausen from aboard the passenger ships of North German Lloyd and the Woermann Line to German colonies, among others; all seven continents ** Scope: seven travel diaries, about 180 letters and postcards, about 30 photos Processing: completely transcribed; not digitized Planning: feeding into the Caliope network (2018)

Estate:; contribution to the mission history of the Witbooist tribe for the archive of the Barmer Mission House, 139 p., i.e., 1897, the archive handed over by the author in 1904; some more from the unforgettable uncle Max (Huyssen), Dr., no. year; excerpts from Johannes Olpp's "Chronik d. !Kowesi-Stammes von 1780-1880", after the manuscript in the estate of Christian Wilhelm Friedrich Spellmeyer (copy), 25 p., 1890;