The Letters of J.R.R. Tolkien
0-04-826005-3
1981 Hardback Edition
George Allen and Unwin
First year: 1981
0-04-440664-9
1990 Paperback Edition
Unwin Paperbacks
First year: 1990
0-261-10265-6
1995 Paperback Edition
HarperCollins
First year: 1995
0-00-862876-9
2023 Hardback Edition
HarperCollins
First year: 2023
0-00-862880-7
2025 Paperback Edition
HarperCollins
First year: 2025
0-00-862877-7
2026 De Luxe Edition
HarperCollins
First year: 2026