The Webster’s New Collegiate Dictionary 150th Anniversary Edition 1981 Thumb Indexed is a comprehensive reference tool published by Merriam-Webster, Incorporated. This hardcover dictionary and thesaurus set features revised editions in English, making it a valuable resource for students and professionals alike. With a thumb index for easy navigation and a compact size of 9.9 inches in length, 7.2 inches in width, and 1.9 inches in height, this anniversary edition is a must-have for anyone in need of a reliable reference guide.