The Letters of J.R.R. Tolkien is a trade paperback book published by HarperCollins in 2000. This literary collection features letters written by the renowned author of the Lord of the Rings trilogy. The book delves into topics such as authorship, diaries, and journals, providing insights into Tolkien's writing process and personal life. With 512 pages and beautiful illustrations, this book is a must-have for fans of fantasy literature and literature in general.