Since the book was published in 1974, there may be some outdated details, but none that I'm aware of. (I'm not an expert, but did enjoy the documentary "The Hittites: A Civilization That Changed the World" from 2004 and did not notice much disagreement.) This book still serves as a useful introduction to the Hittites, their history and their discovery. Author Jim Hicks begins with the "rediscovery"--their monumental cities were always there to see--of the Hittites in the late 19th century, when scholars began to realize they were dealing with a hitherto unrecognized major and imperial civilization. The book describes the process by which Bedrich Hrozny deciphered the Hittite language (written mostly in cuneiform) by following his hunch that it was an Indo-European, and not a Semitic, language. The majority of the book describes the Hittites themselves, devoting several chapters to their society, myths and culture. It also examines the Hittites' history, the creation and growth of their empire, giving a detailed account of their constant rivalry with Egypt for control of the ancient Middle East--often using their own and the Egyptians' words gleamed from their massive diplomatic correspondence. Like all Time-Life books, and unlike many other general introductions to the Hittites, the book is generous with its illustrations: beautiful photo essays, maps of important battles--such as critical Battle of Kadesh (Syria) pitting the forces of Ramses II and Muwatalli--and contemporary charcoal-drawing reconstructions of what Hittite dress and cities would have looked like.