"Afrikanischer Sklavenhandel, Supplement to No. 227 of the Allgemeine Schweizer Zeitung of 25.09.1886, (Report on Greiner's 12-year activity in Abyssinia and Gallaland), 1886; employment negotiations, travel preparations, and Service contract, 1887; travelogues and first experiences in Zanzibar, 1887-1888; letters and reports from Zanzibar and Dar-es-Salaam, 1889; contract with Ismael Wahora for the expansion of the station in Dar-es-Salaam, 1889; letters and reports from Zanzibar and Dar-es-Salaam, 1889. Reports from Zanzibar and Dar-es-Salaam, 1890; CVs of African school children, 1890; correspondence during their stay at home, 1891; letters and reports from Zanzibar and Dar-es-Salaam, 1892; letters and reports (general), 1894-1905; Greiner's extensive life and illness history, 1899; correspondence with Mrs Greiner, 1906; design of Greiner's tomb in Kisserawe, 1907