Contains: Invoices - receipts - account statements - bills of lading

Contains: Business correspondence - Business report (incomplete) to arrow

Contains among other things: Travel reports on traffic conditions, cultivation, settlement and work opportunities

Contains: among others: essay by Erwin Finlay-Freundlich "Über die Notwendigkeit der Errichtung eines auswärtigen astronomischen Forschungsinstituts" - publication by Paul Range "Neue Temperaturbeobachtungen aus dem Süden Deutsch-Südwest-Afrikas" - memorandum about the erection of a German imperial observatory in Windhoek by Paul Guthnick - German astronomical journalist School reports of a German school in Swakopmund - "Points of view for the selection of a place for the German astronomical station" by Friedrich Becker - Map of Pretoria and surroundings (1908) - General plan of the city of Windhoek (1916).

Contains: among others: Cuno Hoffmeister's research trip to Windhoek - quotation from Paul Guthnick and Erich Schoenberg for the annual operating costs - report on the American and English astronomical observation stations in South West and South Africa.

Contains: among others: Memorandum about the foundation of a national observatory in Windhoek by Erich Schoenberg - Report by Erich Schoenberg about the expedition of employees of the observatory Breslau to South West Africa - Graphical representation of a round bearing on the radio tower area near Windhoek - Cost estimate by Paul Guthnick and Erich Schoenberg for the annual operating costs.

Contains: among others: Memorandum about the construction of a German imperial observatory in Windhoek by Paul Guthnick.

Contains among other things: Pro Memoria über die allgemeinen und politischen Verhältnisse auf Sansibar (transcript), o. Dat. Contract between the Society for German Colonization and Sultan Mbuela von Useghua (transcript), Nov. 19, 1884 Protective Letter for the Society for German Colonization of November 27, 1884. Feb. 1885 (transcript) Memorandum on "Acquisitions of the Society for German Colonization in East Africa with Regard to Geographical Characteristics, Political Conditions etc. and Some Aspects for the Administration to be Created There" by Carl Peters (transcript), o. Dat.

Contains only: Memorandum of Konrad Schauers (East Africa) to the owner of the manor Alfred Freiherr von Oelsen, Vietnam (district Königsberg) from April 29, 1916

Contains among other things: Outbreak of the plague in D e u t s c h - O s t a f r i k a, 1912

• Stereoglasdia *