1898-1911 in Omupanda, Namakunde, Ondjiva, from 1911 indigenous commissioner in South West Africa in government service, later German parish priest in Swakopmund, then parish office among others in Witzenhausen and Berlin; letters and letters. Reports, 1898-1913; Private letters to inspectors RMG, 1898-1902; Curriculum Vitae, 1889 & 1891; Confidential Communication of the Governor Leutwein about the Okwanjama Chief Wyulu, 1901; Provisions of the Reich Colonial Office for the Colonial Officers, 6 p..., Dr., 1907; Negotiations concerning the takeover of Tönjes as indigenous commissioner in colonial service, 1911; "Amtsblatt für d. Schutzgebiet Deutsch-Südwestafrika", No. 1, Jan. 1912; Correspondence with Hermann Tönjes, 1920-1933; Correspondence with Hermann Tönjes jun., 1949;