The book "Der Eskimo" was written by an explorer born in which year ?
Peter Freuchen Lorenz Peter Elfred Freuchen (February 2, 1886 – September 2, 1957) was a Danish explorer, author, journalist and anthropologist. He is notable for his role in Arctic exploration, especially the Thule Expeditions.
Vladimir Arsenyev Vladimir Klavdiyevich Arsenyev (Russian: Влади́мир Кла́вдиевич Арсе́ньев ; 10 September 1872 – 4 September 1930) was a Russian explorer of the Far East who recounted his travels in a series of books — "По Уссурийскому Краю" ("Along the Ussury land") (1921) and "Дерсу Узала" ("Dersu Uzala") (1923) — telling of his military journeys to the Ussuri basin with Dersu Uzala, a native hunter, from 1902 to 1907. He was the first to describe numerous species of Siberian flora and lifestyle of native ethnic people.