The Joy of Signing Second Edition by Lottie Riekehof. 
One of the most comprehensive guides to ASL signing available, The Joy of Signing provides clear line-drawn illustrations of the signs alongside the bolded entry word, description of the movement, origin of the sign, and a usage example. Signs are arranged alphabetically by category. Signs for family relationships, pronouns, endings, time, mental action, emotions, physical movement, location, verbs, quantity, education, nouns, food, sports, countries, animals, numbers and many more categories are covered. 352 pages, indexed, hardcover.