1904-1908 in Hoachanas, Keetmanshoop; curriculum vitae and application documents, 1898; letters and reports, 1904-1908; personal sheet and inventory list, 1908;

1903-1951 in Berseba, Keetmanshoop, Swakopmund; letters and reports, 1903-1958; curriculum vitae, certificates, medical certificate, 1894-1903; obituary for Mrs. Elfriede Eisenberg, née Schmitz, 1956; obituary for Friedrich Gustav Eisenberg, 1958;