For the Good of the Rider, by Mary Wanless.
Here Wanless expands her theories, initially set forth in The Natural Rider (published in England as Ride with your Mind). Eight years later she has had more experiences to include; in her first book she wrote predominantly about her own experiences. She also has included a large number of off-horse exercises to illustrate the biomechanics of riding and make it easier to learn. This will help you to be all you can be in the saddle.
Hardcover, 335 pages