Any traditional tea ceremony is a beautiful experience, and goes far beyond the simple drinking of tea. I don't just mean the well-known Japanese ceremony either. There are Chinese ceremonies, and don't forget the British Afternoon Tea.
1. The Tea Ceremony
By Seno Tanaka. Filled with gorgeous photos, this book is an enlightening read for anyone interested in Japanese tea ceremony. It covers the basic ceremony itself, as well as the surrounding aspects such as pottery, history and even Zen Buddhism. 
2. The London Ritz Book of Afternoon Tea
By Helen Simpson. Traditional English afternoon tea is a rather elegant affair. Tea is a big part of it, but so is the variety of foods that are also served. Though this book does have some recipes, it is more about the atmosphere and social aspects of Afternoon Tea.
3. Cha-No-Yu
By A.L Sadler. Japanese tea ceremony comes to life in this book, filled with factual information as well as narrative anecdotes.
4. Chinese Tea Culture
By Wang Ling. Chinese tea ceremony is just a part of this book that covers the entire history and culture of tea in China. If you are interested in Chinese teas, this is the book for you.5. Taking Tea at the Savoy
By Anton Edelmann, who is the chef at the Savoy Hotel in London. Reading through this delightful little book will make you feel like you are sipping tea in London yourself. There are recipes included too.
6. Chado: The Japanese Way of Tea
By Soshitsu Sen. You will feel yourself an expert on tea ceremony after reading this book. It's amazing how many details are attended to.
7. Tea and Ceremony
By Diana Saltoon. A Zen approach to traditonal Japanese tea ceremony, with beautiful examples of ceremonies that you could perform yourself. Plenty of information on the history and culture of tea as well.