Farm s. RMG 2,568, Okombahe s. a. RMG 2,513 a-c, RMG 3,302 and RMG 2,530 a; annual and conference reports on Usakos mission station, by Wilhelm Emil Jakob Diehl, Heinrich Johann Brockmann and Ernst Wilhelm Römer, 1907-1937; church elders ask RMG for help with construction e. Church, 1908; Visitation Report, 1913; Report on the German Evangelical Community of Lüderitz, by C. Wandres, 1927; Reports on the German Evangelical Community of Usakos, by Heinrich Johann Brockmann and Ernst Wilhelm Römer, 1927-1937; Annual Report on Sister Work in Tsumeb, 1932