What makes this book so good is its comprehensiveness. EVERYTHING you need to know and probably most of what you should know about packing is found within its pages. It doesn't just cover the relevant advantages or disadvantages of horses over mules or vice versa, but also the proper training of the animal, types of shoes, care/feed of the animal, what to look for when purchasing a horse or mule, etc.... It covers deckers and sawbucks, and how they should fit the animal, and the merits of each. It covers panniers and manties and how they are tied, loaded on the animal, and secured to the animal. By professional outfitters Smoke Elser and Bill Brown.