Vladimir Klavdiyevich Arsenyev, was an explorer of the Far East of the Russian Empire and later the Soviet Union who recounted his travels in a series of books — "По Уссурийскому Краю" and "Дерсу Узала" — telling of his military journeys to the Ussuri basin with Dersu Uzala, a native hunter, from 1902 to 1907. Wikipedia