The History of The Lord of the Rings is a 4-book series with 4 released primary works first released in 1984 with contributions by J.R.R. Tolkien and Christopher Tolkien.
#6 of 13 in The History of Middle-Earth
1984 • 30 Readers • 497 pages • 3.7
#7 of 13 in The History of Middle-Earth
1989 • 27 Readers • 504 pages • 4.5
#8 of 13 in The History of Middle-Earth
1990 • 24 Readers • 476 pages • 4
#4 of 4 in The History of The Lord of the Rings
1992 • 11 Readers • 176 pages • 4.5