Series
History of Middle-Earth
We don't know whether this one is finished.
Nobody has confirmed the status of this series yet. That's a gap in our data, not a verdict on the books.
3 books here · 1986–1993
Publication order
This is publication order — nobody has confirmed a different reading order for this one yet.
4
The Shaping of Middle-Earth
1986 · J.R.R. Tolkien
10
The Morgoth's Ring
1993 · J.R.R. Tolkien
—
The End of the Third Age
· J.R.R. Tolkien