Contains among other things: Brochure of an East African railway from Dar es Salaam to Usagara, 1887 Projected connection of the railway network from South West Africa to the railway network of the South African Union, with attitude of General Smuts, 1912 "Kolonialeisenbahn-Verkehrsordnung vom 1. Juli 1913" (print), 1913 Otavi Minen- und Eisenbahngesellschaft Berlin. Annual Report 1912 - 1913 (print), 1913 German interests in Katanga/Congo, 1913 - 1914