Annual Report 1921 s. RMG 2,528 a, Farm s. RMG 2,561 a b, Augustineum s. RMG 2,648, Girls' Bible School Work, see RMG 2,652, Paulinum s. RMG 2,651 d, RMG 3,315 and RMG 3,526, ELK Sekondere Skool s. RMG 3,337; quarterly, annual and conference reports, statistics and annual accounts, by Freerk Meyer, Johannes Georg Heinrich Olpp, Friedrich Heinrich Peter Bernsmann and Wilhelm Emil Jakob Diehl, 1899-1907; sketches of the maps of the German parliament. Eigentumsverhältnissen rund um Otjimbingwe, 1903; Die Ursachen d. Hereroaufstand, Report, Johannes Georg Heinrich Olpp, 11 p. hs., 1904; Petition d. Gemeindeältesten von Otjimbingwe um Verbleib von Johannes Georg Heinrich Olpp, 1905; Visitationsbericht, 1906; Erastus Jahanika an RMG: Dank für Unterricht, d. he enjoys in Otjimbingue, 1907; Report on Herero Orphanage, 1907
Rhenish Missionary Societyno continuous counting and binding; transmission of missionary records: Friedrich Wilhelm Kolbe 1848-1851 Okahandja, Otjikango, Schmelens Erwartung, Otjimbingwe, Peter Heinrich Brincker 1864-1870 Otjikango, Johann Jakob Irle 1869-1871 Otjikango, Okahandja, Philipp Diehl 1873-1892 Okahandja, Freerk Meyer 1880-1888 Otjikango u. Wilhelm Eich 1882-1888 Okahandja, Otjizeva, Otjosazu, ms..;
Rhenish Missionary Society1877-1900 in Otjikango, Omaruru, Otjimbingue, housefather in the Mission House, 1903-1913; letters, station and quarterly reports, travel reports, 1877-1899; quarterly reports from 1897, also signed by Johannes Olpp; private letters to Inspectors d. RMG, 1882-1899; Invoices for building materials and municipal accounts; Letter from Hendrik Witbooi, Rooibank to Freerk Meyer, 1891; Police Ordinance on smallpox, 1891; Report from d. Commemoration of the 25th anniversary of the church in Otjimbingue, by H. Kleinschmidt, 1892; Description e. Begegnung mit Hendrik Witbooi (1. Quartalsbericht), 1892; Contract with the school board of the German mission school Otjimbingue, 1895; Question by Mr. von Lindequist about harmful influence of spiritual beverages on the natives, 1896;
Rhenish Missionary Society