The History of Middle-earth is a 12-volume series of books that collect and analyze material relating to the fiction of J. R. R. Tolkien, compiled and edited by his son, Christopher Tolkien. Some of the content consists of earlier versions of already published works, while other portions are new material. These books are extremely detailed, to the point of documenting scraps of paper that have been erased multiple times with many footnotes. Christopher Tolkien has documented the history of the writing of the Middle-earth stories in as much detail as his father documented the fictional history of Middle-earth itself.

The first five books track the early history of The Silmarillion and related texts. Books six to nine discuss the development of The Lord of the Rings; book nine also discusses the Númenor story in the form of The Notion Club Papers. Books ten and eleven return to the Silmarillion material, including the Annals of Beleriand and Annals of Aman. Book twelve discusses the development of the Appendices to The Lord of the Rings and assorted writings from the last years of Tolkien's life.

1. The Book of Lost Tales 1 (1983)
2. The Book of Lost Tales 2 (1984)
3. The Lays of Beleriand (1985)
4. The Shaping of Middle-earth (1986)
5. The Lost Road and Other Writings (1987)
6. The Return of the Shadow (The History of The Lord of the Rings v.1) (1988)
7. The Treason of Isengard (The History of The Lord of the Rings v.2) (1989)
8. The War of the Ring (The History of The Lord of the Rings v.3) (1990)
9. Sauron Defeated (includes The History of The Lord of the Rings v.4) (1992)
10. Morgoth's Ring (The Later Silmarillion v.1) (1993)
11. The War of the Jewels (The Later Silmarillion v.2) (1994)
12. The Peoples of Middle-earth (1996)

A combined index was published six years after the series was completed:

Index (2002)

External links

• A detailed list of content in History of Middle-earth volumes and Unfinished Tales

Middle-earth books | The History of Middle-earth | Collections of works by J. R. R. Tolkien

La Historia de la Tierra Media | Histoire de la Terre du milieu | Historia Śródziemia