"The Illustrated World of Tolkien The Second Age" by David Day is a hardback book published by Octopus Publishing Group in 2023. The book, part of the Tolkien series, explores the art treatments and subjects related to the iconic fantasy world created by J.R.R. Tolkien. With a focus on the Second Age, the book is richly illustrated and provides a comprehensive look into the detailed world-building and storytelling of Tolkien's Middle-earth. Written in English, this book is a must-have for fans of the genre and lovers of Tolkien's work."