Contains among other things: Map to the report of the Obermedizinalrat Prof. Dr. Nocht on his journey through D e u t s c h - O s t a f r i k a and British East Africa, 1911; sketch of the occurrence of sleeping sickness in the district of Ssongea, 1912

Contains among other things: Map of Belgian Congo, M.: 1:8 000 000, 1910 Sketch of the spread of sleeping sickness in Uganda, 1910/11

Contains among other things: General plan of the track situation in Swakopmund, approximate scale 1:5 000. 1902.

Lange, Erich (1889 - 1965) Prof. Dr.phil.; Professor of Fuel Geology 1946 President of the German Geological Survey; Director of the Geological Service of the GDR The estate contains: Excerpts from the file 1957 "Preparation of the commemorative event 10 years StGK (Staatliche Geologische Kommission) (contains among other things: material, elaborations and handwritten notes) Correspondences Personal letter of Gottlieb A. Seberna Handwritten notes among other things from and to geological books, to Cameroon, manuscripts to geological observation in French, German and English. Colonies (e.g. East-Adamaua), excerpts from the journal of the German Geological Society vol. 84(1932), photographs of tree trunks in a basalt stream near Meiganga

Contains among other things: Activity of the Bethelmission Steudel, Tsetse flies and sleeping sickness in the former D e u t s c h - O s t a f r i k a, in: Übersee- und Kolonialzeitung, o.O. o.D. Map of D e u t s c h - O s t a f r i k a, M.: 1:3 000 000. o.J.

Contains among other things: Map of Upolu (Samoa), 1910

Contains among other things: Map of the deforestation area at Lake Victoria (containment of sleeping sickness), 1909