Borneo I, Borneo II, Borneo III

3 vols. Folio, orig.heavy limp paper portfolios, each portfolio also marked I, II and III in gilt on front cover. 35 loose full-sized plates after original photographs taken by author, each with a loosely inserted text-leave in German with an introduction and concise description to the plates. Plates after field-photos of superb quality by Dr. Gregor Krause,taken during his stay at Balikpapan, dutch territory of Borneo, 1920-1925. I: plates depict some Dayak Headmen and a young Orang Utan family; II: The Jungle of Borneo; II: A family of Nose-monkeys