Book excerpt: "Your National Parks " by Enos A. Mills is a guide about national parks. The author has tried to describe a few of the wonders of the Parks and suggest the larger, fuller use of them. Through most of the Parks described, the author has had happy excursions afoot, alone and unarmed. Not only do the Parks contain some of the world's sublimest and most beautiful scenes, but each Park is a wildlife reservation, a place where guns are forbidden. Thus protected, these wildernesses will remain forever wild, forever mysterious and primeval, holding for the visitor the spell of the outdoors, exciting the spirit of exploration.