A childhood friend's father was a local version of PHC. He was always willing to take kids out to the field, and always had great stories. When I got older I realized what a "damned liar" he was and distanced myself from him. Then, as I aged further, and started taking out youth I realized two things about the man. One - most people can't tell a story for ****, but he could rework almost any story into something worth hearing. Two - any man that devoted that much time to taking kids outdoors and firing up their dreams deserved some slack for his fleeting visits to the land of truth.
But, back to the original post. I have three outdoors related books that I read and re-read to this day.
Hunting with the Bow and Arrow by Saxton Pope. He befriended and learned from one of the last Native Americans, and was able to distill that knowledge down much less judgmentally than most of the people that encounter native Americans. The second book was one I first read as a youth - The Long Rifle by Stewart White - a fictional history set during the heyday of the American Mountain Man (which every red blooded American youth wanted to be).
The last and most impressive book is African Game Trails by Theodore Roosevelt. I am blessed to have a first printing copy, in rough shape, but first printing nonetheless.