Tolkien presents The Lord of the Rings within a fictional frame story where he is not the original author, but merely the translator of part of an ancient document, the Red Book of Westmarch. That book is modelled on the real Red Book of Hergest, which similarly presents an older mythology. Various details of the frame story appear in the Prologue, its Note on Shire Records, and in the Appendices, notably Appendix F. In this frame story, the Red Book is the purported source of Tolkien's other works relating to Middle-earth: The Hobbit, The Silmarillion, and The Adventures of Tom Bombadil.