Contains among other things: The culture of Manihot Glaziovii and the extraction and preparation of rubber in East Africa P. Wolff, A visit to the countries of Lake Chad F. Wolff, The economic area of the Kano railway in northern Nigeria

• Stereoglasdia *

Contains among other things: List of the colonial Germans who emigrated again to Tanganyika Territory after the world war

Contains among other things: Travelogues about British East Africa, 1908/09 Map of German East Africa, 1:300 000, 1911/12

Curriculum Vitae, 1921; Vow of Deputation, 1922; Correspondence, 1921-1930; Reports and Circulars from Java, 1922-1929

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• photo *