David Day is the author of a dozen books on the world of J.R.R. Tolkien, beginning with A Tolkien Bestiary, the first illustrated guide to Middle-earth. Together with Tolkien: The Illustrated Encyclopedia and Tolkien's Ring, his books have been translated into twenty languages and have sold in excess of 3 million copies. A Canadian living in Victoria, British Columbia, Day has also published more than thirty other books of mythology, history, fantasy, fiction, and poetry, for both adults and children.