Reports from German missions abroad, in particular naval attachés and military representatives as well as command posts of the Kaiserl. Marine (with handwritten remarks of Kaiser Wilhelm II.): Relations of Germany to USA, Cuba, Belgian Congo, Portuguese-West Africa, Mexico, Australia, Romania, China, Sweden, Turkey, Russia, Brazil, Greece, Spain, England (here: Gibraltar), Cameroon, Togo, Italy, Albania, Siam, Philippines, Lagos
Société Forestière et Commerciale du Congo Belge, Brussels. - Preliminary Report No. I/50 of Deutsche Revisions- und Treuhand- Aktiengesellschaft, Brussels Branch
Société des Chemins de Fer Léopoldville-Katanga-Dilolo Annexes to Preliminary Report No. I/183 of Deutsche Revisions- und Treuhand-Aktiengesellschaft, Brussels branch
Société des Chemins de Fer Léopoldville-Katanga-Dilolo, Elisabethville. - Preliminary Report No. I/183 of Deutsche Revisions- und Treuhand-Aktiengesellschaft, Brussels Branch