No. 123 Agreement between the British and German Governments, respecting the Sultanate of Zanzibar and the opposite East African Mainland, and their Spheres of Influence – 1st November, 1886
(in: Map of Africa by Treaty Vol II, pp. 617, 620)
https://archive.org/details/mapafricabytrea00britgoog
"3. Both powers agree to establish a delimitation of their respectives spheres of influence on this part of the East African Continent.....
The territory to which the arrangement is applied is bounded on the south by the Rovuma River, and on the North by a line which, starting from the mouth of the Tana River, follows the course of that river or its affluents to the point of intersection with the equator and the 38th degree of east longitude ...."
"Line of Demarcation.
The line of demarcation starts from the mouth of the River Wanga or Umbe, runs direct to Lake Jipe, passes thence along the eastern and round the northern side of the lake and crosses the Lumi River;
Teveita and Chagga (Kilimanjaro District)
After which it passes midway between [sic] the territories of Taveita and Chagga, skirts the northern base of the Kilimanjaro range, and thence is drawn direct to the point on the eastern side of Lake Victoria Nyanza which is intersected by the 1st degree of south latitude"
The Last TimeArchived 13 August 2021 at the Wayback Machine, Stewart Smith, J. (2019). The last time: memoirs of a colonial officer in Nigeria and the Southern Cameroons, free ebook version via Cambridge University Centre for African Studies p. 36
Hartmut Pogge von Strandmann (February 1969). "Domestic Origins of Germany's Colonial Expansion under Bismarck". Past & Present (42): 140–159. JSTOR650184.
The Last TimeArchived 13 August 2021 at the Wayback Machine, Stewart Smith, J. (2019). The last time: memoirs of a colonial officer in Nigeria and the Southern Cameroons, free ebook version via Cambridge University Centre for African Studies p. 36
Walter Nuhn (1998). Flammen über Deutschost: der Maji-Maji-Aufstand in Deutsch-Ostafrika 1905–1906, die erste gemeinsame Erhebung schwarzafrikanischer Völker gegen weisse Kolonialherrschaft: ein Beitrag zur deutschen Kolonialgeschichte. Bonn: Bernard & Graefe. ISBN3763759697. OCLC41980383.
BRODE, H. (2016). BRITISH AND GERMAN EAST AFRICA: their economic commercial relations (classic reprint). [S.l.]: FORGOTTEN BOOKS. ISBN978-1330527467. OCLC980426986.
Université du Burundi. Département d'histoire., ed. (1991). Histoire sociale de l'Afrique de l'Est (XIXe-XXe siècle) : actes du colloque de Bujumbura, 17-24 octobre 1989. Paris: Karthala. ISBN9782865373154. OCLC25748614.