New York, Scribner, 1914. Large 8vo. Original brown cloth, ornamented and lettered in gilt; pp. xiv, [2], 383, frontispiece, numerous plates, three maps (one folding); apart from light fading of spine and contemporary presentation inscription to front fly-leaf, fine. First editionof the account of Roosevelt's 'zoogeographic reconnaissance' with the Brazilian explorer Rondon to discover if the Rio da Dúvida ('River of Doubt'), flowed into the Amazon. Traversing some of the most dangerous territory of Amazonia, the party was successful and the river was renamed Rio Roosevelt, sometimes Rio Teodoro, in his honour. The travellers observed wildlife, report on various indigenous tribes and their societies, as well some big game hunting. 'Almost from the start, the expedition was fraught with problems. Insects and disease such as malaria weighed heavily on just about every member of the expedition, leaving them in a constant state of sickness, festering wounds and high fevers. The heavy…