The Lord of the Rings trilogy:
The Lord of the Rings: The Fellowship of the Ring
The Lord of the Rings: The Two Towers
Lord of the Rings: The Return of the King
Silmarillion
Children of Lin Hu, children of Hurin.
Unfinished story
History of Middle-earth, Volume 12 History of Middle-earth.
The novel ends here. ...
There is also the album "The Road Is Long, Xiu Yuan Xi".
The Adventures of Tom Bambadil, a collection of poems.
History of the Hobbit and so on. ...