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.
Willy Ley Willy Otto Oskar Ley (October 2, 1906 – June 24, 1969) was a German-American science writer, spaceflight advocate, and historian of science who helped to popularize rocketry, spaceflight, and natural history in both Germany and the United States. The crater Ley on the far side of the Moon is named in his honor.