'The museum of the Otto-von-Bismack Foundation contains 13 photos with reference to the company Jantzen & Thormählen. The photos
'Europäische Expeditionsangehörige. - Directory
Gouvernement von Kamerun'Mutation des Soldats Haoussa du Togo à Yaoundé afin d'y établir un contact avec les caravanes de marchands Haoussa de l'Adamaoua et leur redirection vers la côte du Protectorat du Cameroun. - Arrêté du Ministère des Affaires étrangères
Gouvernement von Kamerun'The cash book of the Jantzen & Thormählen company
Initiation of an investigation into the unauthorised execution of the Wute (Ngila) expedition (Lieutenant Dominik) and the return march through the Bakoko area [fol. 59] Claims for compensation by the companies C. Woermann and Jantzen & Thormählen for damage caused in the Bakoko-Bassa region, October 1894
Gouvernement von KamerunContains among others :Incomplete record of Thormählens about a meeting with Woermann, Jantzen, Thormählen, Bohlen and Bieler at Fürst von Bismarck on 25 Sept. 1884" Kamerun"; essay by Prof. Dr. F. Wohltmann, Druck, 1896 "Die Hamburger und die Erschließung des nördlichen Westafrikas", article by R. Koop in "Hamburger Fremdenblatt", 94th Vol., No. 494; 4 Nov. 1922
Thormählen, JohannGeneral political, military and economic conditions. - Mungo area (Suna and Esso villages), 1886 [fol. 3] Cameroon hinterland research expedition (Dr Eugen Zintgraff). - Proceedings in the Mungo area. - Report by Deputy Governor von Puttkamer, 9.12.1890 [fol. 5 - 7] Cameroon Hinterland Research Expedition (Dr Eugen Zintgraff). - Mungo expedition from 27 November to 8 December 1890 (Deputy Governor von Puttkamer): Prevention of impending unrest due to disputes between the Jantzen & Thormählen company and the Duala traders. - Report to the Foreign Office, 9.12.1890 [fol. 5 - 14] Cameroon hinterland research expedition (Dr Eugen Zintgraff). - Dr Zintgraff's continued influence in the Mungo region despite his departure. - Reports of Chancellor Leist, March, April 1893 [fol. 22 - 29]
Gouvernement von Kamerun