s.a. The Witbooi in Southwest Africa during the 19th century. Köln 2007 = 2-06267[in Archiv-Bibliothek]; "Ein Beitrag zur Geschichte d. Witbooischen" by Johannes Olpp, 10 p. hs., 1894; Correspondence with government offices and friendly mission societies about the fate of Witbooi Hottentots e. g. letter of teacher Hendrik Witbooi 1904-1913;

1901-1930 in Ondjiva, Omupanda, Namakunde, Lüderitzbucht, s.a. RMG 1.477 manuscript about Ovamboland; letters and reports, 1901-1950; curriculum vitae (3 versions), applications, medical certificate, 1891-1901; letter from Wilhelm Heumbo, Ondjiva, with d. Request for more teachers for Ovamboland, 1908; annual report of the Ovambo community Lüderitzbucht-Diamantfelder, 1919; death announcement for Karl Sckär, 1950; correspondence with the Sckär family, 1958-1964; death certificate for Wilhelmine Sckär, née Kremer, 1968

Lay brother, mission building craftsman, 1909 Karibib; curriculum vitae, application, certificates, 1907-1909; letter from Karibib, 1909;

Contains: contains and others: - Ada Schnees descent (1932); - Joined the NSDAP (1933); - Tasks after joining the NSDAP. Part 1 (1933); - Tasks after joining the NSDAP. Part 2 (1933); - My acquaintance with Schacht (1933); - Interview with Hitler (1933); - Composition of the new Reichstag (1933); - Jewish question and foreign policy: VI. Commission of the League of Nations Assembly (1933); - Negotiations of the Congress of the World Association of League of Nations Societies (1933); - Report on the treatment of the question of the government measures taken against Jewish population groups in Germany (1933); - Visit to Lord Snowden (1943); - Schnee Speech in Folkestone (1934); - England and the East African Mandate (1934); - Events of the 30th World War of Nations (1933); - Events of the 30th World War of Nations (1933); - The World War of Nations (1934); - The World War of Nations (1933); - The World War of Nations (1934); - The World War of Nations (1934); - The World War of Nations (1934); - The World War of Nations (1934) June 1934; - Schnee over Schleicher and Papen (1934); - Discussion with de Valera (1934); - Meetings of the World Association of League of Nations Societies in Geneva (1934); - Conference of the World Association of League of Nations Societies in Folkestone (1934); - Conference in Folkestone (1934); - Speech in Folkestone (hs. manuscript) (1934); - Discussion with State Secretary Vansittart from the British Foreign Office (1935); - Interview with Major v. Stephani from the "Stahlhelm" (1935); - Supervision of letter and telephone traffic and the police spying system (1935); - Ribbentrop and Rosenberg (1935); - Visit by Lord Buxton (1937); - The Deutsche Kolonialgesellschaft from its foundation in 1887 until its dissolution in 1936 (1937); - A few things about the Lord Mayor, and his wifea. about Konrad Adenauer, former Lord Mayor in Cologne (1937).

Includes:1. correspondence with Fr. Karl Hoegn, 19192. correspondence with Fr. Ludwig Mekes, 19153. correspondence with Fr. Ronuald Laqua, (1915)4. Correspondence with Brother Peter Staudt, 1918-19195 Correspondence with Fr. Franz Xaver Zeus and Fr. Ernst Ruf (extensive), 1916-1919; Including:- Letter from Fr. Ernst Ruf to Fr. Karl Hoegn, 1915- Letters and experience report from Fr. Simon Rosenhuber, 1914-1916- List of the whereabouts of the confreres and excerpts from letters of some confreres, 1916

Letters and correspondence, 1898-1909; Personal correspondence by Dr. Philipps and a letter by Pastor von Bodelschwingh, 1911, and a newspaper clipping, 1912; family letters, 1914-1919; testimony for Pastor Rösler, 1921; letters from African Christians to Rösler "New Letters from Usambara, 1922

1893-1896 in Okahandja, from 1897 parish office USA and others in Chicago; letters and station reports, 1894-1896; letter from Inspector August Schreiber about dismissal, 1896;