Amraal's tribe, abandoned from 1880-1907, Farm Gobabis s. RMG 2.547; annual and conference reports, by missionary Jakob Friedrich Johann Irle and others, 1908-1935; Chronology of Gobabis 1855-1910, pag. 1, ca. 1910; Reports of mission colonist Oskar Emil August Gerlach, 1908-1909; visitation report, picture postcard, 1911; report to OKR in Berlin about work on d. Gobabis district, 1911; Gobabis, report, Jakob Friedrich Johann Irle about his 25 years there, 1931; About Amral Lambert's life, the mission station Wesley Vale and Gobabis and the Mbanderu until about 1896, Jakob Friedrich Johann Irle, 10 p. ms, o. J.

1906-1931 in Omaruru, Okahandja, Gobabis, Heimatdienst 1931-1947; Letters and Reports, 1906-1954; Curriculum Vitae (2 versions), medical certificate, 1897-1906; Report on the spiritual service of the white population in the district Gobabis 1916-1919, 5 p..., ms, 1919; Zur Geschichte d. Mission in Gobabis, 1932; Rentenangelegenheiten, 1946-1954; Letters to Adolf Schick, formerly Omburo then Geislingen, 1950-1954; Letters to Carl Bergers, 1953-1954; Obituary for Jakob Friedrich Johann Irle, 1954;