Soft cover. Zustand: Good. Wolfe, Art (illustrator). Tight binding, clean interior. Wraps have mild edge wear and scuffing, small water stain on top rear spine corner. Interior is unmarked. "During the early 1940s in Idahos expansive Selway-Bitterroot wilderness, a few items disappeared from a tent camp, then from a lookout tower, and a ranger station. Eventually, the continuing loss of food and supplies at such isolated sites confirmed the presence of a mysterious stranger." 165 pages.