1892-1904 in Zumamas, Gaub, Grootfontein, Otjimbuna, Franzfontein; letters, travel, station and annual reports, 1891-1904; private letters to inspectors of the RMG, 1891-1899; map sketch with location of residential places in the Otavi area, 1894; letter of the. Teacher Hendrik Djuella, 1901; Letters from Emmy Kremer, née Weyel with reports of her husband's death, 1904; Address by G. D. J. Scholls and Johs. G. de Wet at the funeral of Friedrich Kremer in Grootfontein, 1904; obituary for Emmy Kremer, née Weyel, 1935;