This series contains copies of handwritten and typed reports, in German, from the Rheinische Missionsgesellschaft (Rhenish Missionary Society) missionaries located in Southern Africa, Borneo, Sumatra, Nias and New Guinea. Reports discuss progress, experiences of other missionaries, as well as events in each location, such as the Herero uprisings of 1904 in South Africa. The majority of reports are written by J. Spiecker, with others interspersed from such people as G. Haussleiter and R. Wegner.