1877-1913 in Grootfontein, Warmbad, Rietfontein; Letters and reports, 1877-1916; Curriculum vitae of the aspirant Heinrich Pabst, Schuhmacher, 1872; sketch of the Kalahari and its inhabitants, lecture at the conference on Keetmanshoop, 20 p., 1895; request of Margarethe Buß for a birth certificate, 1942;