Denali, the mountain formerly sometimes known (but not by Alaskans) as Mt. McKinley, is one of the most impressive mountains in the entire world. It is not only the highest mountain in North America, it is the highest northern-most mountain. That means that the weather at its summit is ferocious and ever-changing. It's height is so great that when that weather clears away, it can be seen across an enormous swathe of Alaska.

It is the kind of mountain that challenged Victorians to climb it. By 1913 several attempts had already been made to summit Alaska’s Denali, the highest mountain in North America. That year its peak was finally reached by four men: Harry Karstens, a prospector, hunter, and guide; Walter Harper, a native Alaskan; Robert Tatum, an Episcopalian seminary student; and the Right Reverend Hudson Stuck, missionary archdeacon of the Episcopal Church in Alaska.

What that curious group was doing at such an altitude is the story of Patrick Dean's book A Window to Heaven: The Daring First Ascent of Denali: America's Wildest Peak. It’s by turn a biography of Hudson Stuck, a history of religious life in late 19th century America, a history of Alaska at the moment of immense social change, and a story seemingly co-written by Jack London.

For Further Investigation

Hudson Stuck's books are all open domain and available through archive.org 
The Alaska Native Reader: History, Culture, Politics, edited by Maria Sháa Tláa Williams
Denali: Deception, Defeat, & Triumph–a history of early attempts to summit