Reports from German missions abroad, in particular naval attachés and military representatives as well as command posts of the Kaiserl. Navy (with handwritten marginal notes of Kaiser Wilhelm II.): Relations of Germany to China, USA, Sweden, Japan, East Africa, Brazil, Austria, England, Canada, Spain, Liberia, Turkey (here: Palestine), Uruguay, New Guinea, South Africa, Philippines, Dec. 1911 - Feb. 1913
Rubber and gutta-percha in foreign countries. - Belgian Congo, Brazil, British New Guinea, British East Africa, French West Africa, Gold Coast, Japan, Portuguese Angola and USA
Rubber and gutta-percha in foreign countries. - Belgian Congo, Brazil, British New Guinea, British East Africa, French West Africa, Gold Coast, Japan, Portuguese Angola and USA: Vol. 1
Rubber and gutta-percha in foreign countries. - Belgian Congo, Brazil, British New Guinea, British East Africa, French West Africa, Gold Coast, Japan, Portuguese Angola and USA: Vol. 2
