Henry Holt Books for Young Readers is proud to publish this 50th Anniversary Edition of Lloyd Alexander's classic The Book of Three, the first book in the Chronicles of Prydain, with a new introduction by Newbery Honor–winner Shannon Hale. This anniversary edition is filled with bonus materials, including an interview with Lloyd Alexander, a Prydain short story, the first chapter of the next Prydain book (The Black Cauldron, a Newbery Honor book), an author's note, and a pronunciation guide.

Since The Book of Three was first published in 1964, young readers have been enthralled by the adventures of Taran the Assistant Pig-Keeper and his quest to become a hero. Taran is joined by an engaging cast of characters that includes Eilonwy, the strong-willed and sharp-tongued princess; Fflewddur Fflam, the hyperbole-prone bard; the ever-faithful Gurgi; and the curmudgeonly Doli—all of whom have become involved in an epic struggle between good and evil that shapes the fate of the legendary land of Prydain. This title has Common Core connections.