My favorites were a series of novels for boys by Montgomery Atwater. They were about forest rangers, ski patrolers, and whatnot. As a young lad, I devoured every one of the series that our local library had available. Two I remember were "Hank Winton: Smokechaser", and "Ski Patrol".

Atwater knew what he wrote about. After service with the 10th Mountain Division in WWII, he went to work for the US Forest Service. He established the first formal avalanche research program in the Western Hemisphere, at Alta Utah, in 1945.
"Toto, I've a feeling we're not in Kansas any more."
-Dorothy, in The Wizard of Oz