Threshold of the Unknown Region
Author: first_name: Clements
last_name: Markham
Language: English
Year: 1876

This book, written by Clements Robert Markham - the President of the Royal Geographical society and a polar explorer himself, tells the history of polar exploration from the first voyages in the icy north to the most modern exploration expeditions of Markham's time.  - Summary by Kikisaulite