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.
Leland Curtis Leland S. Curtis (7 August 1897 – 17 March 1989) was an American artist, mountaineer, skier, environmentalist and Antarctic explorer.