a. First edition 1986 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. viii, 392p + 2 plates. 22.2 × 14.3 cm with dust jacket. (The History of Middle-earth IV) ISBN 0-04-823279-3
c. First paperback edition 1988 Edited by Christopher Tolkien. viii, 392p + 2 plates. 19.7 × 12.8 cm (The History of Middle-earth IV) ISBN 0-04-440150-7
Houghton Mifflin(U.S.)
b. First edition 1986 Illustrated by J.R.R.Tolkien. vi, 394p 22.0 × 14.1 cm with dust jacket. (The History of Middle-earth IV) ISBN 0-395-42501-8
HarperCollins
(BL) 1988 Grafton edition. Edited by Christopher Tolkien. 380p 20 cm (The History of Middle-earth IV) ISBN 0-261-10218-4
(A) 1993 Reissue paperback edition 400p 20 × 13 cm ISBN 0-261-10218-4
Del Rey Books (U.S., Paperback)
(A) 1995 Edited by Christopher Tolkien. 17 × 11 cm (The History of Middle-earth IV) ISBN 0-345-40043-7
a. First edition 1987 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. viii, 456p 22.3 × 14.3 cm with dust jacket. (The History of Middle-earth V) ISBN 0-04-823349-8
c. First paperback edition 1989 Edited by Christopher Tolkien. vi, 456p 19.7 × 12.9 cm (The History of Middle-earth V) ISBN 0-04-440398-4
Houghton Mifflin(U.S.)
b. First edition 1987 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. viii, 456p 22.1 × 14.2 cm with dust jacket. (The History of Middle-earth V) ISBN 0-395-45519-7
HarperCollins
(A) 1993 Reissue paperback edition 464p 20 × 13 cm. (The History of Middle-earth V) ISBN 0-261-10225-7
Del Rey Books (U.S., Paperback)
(A) American Paperback edition 1996 Edited by Christopher Tolkien. 17 × 11 cm (The History of Middle-earth V) ISBN 0-345-40685-0
a. First edition 1987 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. xii, 500p + 1 plate. 22.1 × 14.0 cm with dust jacket. (The History of Middle-earth VI; The History of the Lord of the Rings, Part One) ISBN 0-04-440162-0
c. First paperback edition 1990 Edited by Christopher Tolkien. xii, 500p 19.5 × 12.8 cm (The History of Middle-earth VI; The History of the Lord of the Rings, Part One) ISBN 0-04-440669-X
Houghton Mifflin(U.S.)
b. First edition 1988 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. x, 502p 22.1 × 14.1 cm with dust jacket. (The History of Middle-earth VI; The History of the Lord of the Rings, Part One) ISBN 0-395-49863-5
(A) Paperback edition 2000 Edited by Christopher Tolkien. (The History of the Lord of the Rings, Part One) Paperback 21 × 14 cm ISBN 0-618-08357-X
HarperCollins
(A) 1990 paperback edition 512p 20 × 13 cm (The History of Middle-earth VI) ISBN 0-04440669-X
(A) 1991 Hardcover edition (The History of Middle-earth VI) ISBN 0-26110203-6
(A)(BL) 1994 Reissue paperback Grafton edition 497p 23 × 13 cm(The History of Middle-earth VI) ISBN 0-261-10224-9
a. First edition 1989 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. viii, 504p + 1 plate. 22.1 × 14.2 cm with dust jacket. (The History of Middle-earth VII; The History of the Lord of the Rings, Part Two) ISBN 0-04-440396-8
Houghton Mifflin(U.S.)
b. First edition 1989 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. viii, 504p + 1 plate. 21.8 × 14.1 cm with dust jacket. (The History of Middle-earth VII; The History of the Lord of the Rings, Part Two) ISBN 0-395-51562-9
(A) Paperback edition 2000 Edited by Christopher Tolkien. (The History of the Lord of the Rings, Part Two) Paperback 21 × 14 cm ISBN 0-618-08358-8
HarperCollins
c. First paperback edition 1990 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. viii, 504p + 1 plate. 19.6 × 13.0 cm (The History of Middle-earth VII; The History of the Lord of the Rings, Part Two) ISBN 0 261 10220 6
Hardcover edition 1991 Edited by Christopher Tolkien. (The History of Middle-earth VII; The History of the Lord of the Rings, Part Two) ISBN 0 261 10219 2
(BL) 1992 Grafton edition. Edited by Christopher Tolkien. vi, 504p 22 cm ISBN 0-261-10220-6
a. First edition 1990 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. xii, 476p + 1 plate. 22.1 × 14.0 cm with dust jacket. (The History of Middle-earth VIII; The History of the Lord of the Rings, Part Three) ISBN 0-04-440685-1
Houghton Mifflin(U.S.)
b. First edition 1990 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. xii, 484p + 1 plate. 21.9 × 14.0 cm with dust jacket. ISBN 0-395-56008-X
(A)Paperback edition 2000 Edited by Christopher Tolkien. (The History of the Lord of the Rings, Part Three) Paperback 21 × 14 cm ISBN 0-618-08359-6
HarperCollins
c. First paperback edition 1992 Edited by Christopher Tolkien.
(A) Paperback reissue edition 1996 Edited by Christopher Tolkien. 496p Paperback ISBN 0-261-10223-0
Grafton (Paperback)
(BL) 1992 Edited by Christopher Tolkien. xi, 476p 20 cm ISBN 0-261-10223-0
a. First edition 1992 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. xii, 484p + 2 plates. 22.1 × 14.2 cm with dust jacket. ISBN 0-261-10240-0
(A) Paperback reissue edition 1995 Edited by Christopher Tolkien. 496p 20 × 13 cm. Paperback ISBN 0-261-10305-9
Houghton Mifflin(U.S.)
b. First edition 1992 Edited by Christopher Tolkien. 496p 23 × 15 cm ISBN 0-395-60649-7
First edition 1996 Illustrated by J.R.R.Tolkien. Edited by Christopher Tolkien. xiv, 482p + 1 plate. 22.2 × 14.3 cm with dust jacket. ISBN 0-261-10337-7
(A) 1997 Reissue paperback edition 512p (The History of Middle-earth XII) ISBN 0-261-10348-2
Houghton Mifflin(U.S.)
(A)(LC) Houghton Mifflin edition 1996 Edited by Christopher Tolkien. xiii, 482p 23 × 15 cm ISBN 0-395-82760-4
First edition 1998 Illustrated by J.R.R.Tolkien. Introduction by Christina Scull. Edited by Wayne G. Hammond. xxii, 106p + 1 plate. 21.6 × 13.4 cm with dust jacket. ISBN 0-261-10353-9
(A) First paperback edition 1998 Illustrated by J.R.R.Tolkien. Introduction by Christina Scull. Edited by Wayne G. Hammond. 96p 20 × 12 cm. ISBN 0-261-10354-7
(A)(BL) 2002 paperback edition Illustrated by J.R.R.Tolkien. Introduction by Christina Scull. Edited by Wayne G. Hammond. xxxvii, 116p. 18cm. ISBN 0-007-14911-5
Houghton Mifflin(U.S.)
(A) Houghton Mifflin edition (1998) Introduction by Christina Scull. Edited by Wayne G. Hammond. xxii, 106p 22 × 14 cm ISBN 0-395-89871-4
(A) Houghton Mifflin paperback edition (1999) Introduction by Christina Scull. Edited by Wayne G. Hammond. 128p 21 × 14 cm ISBN 0-395-95799-0
G. K. Hall & Company (U.S.)
(A)(LC) large print edition (1998) Introduction by Christina Scull. Edited by Wayne G. Hammond. 214p 22 × 15 cm ISBN 0-078380299-4
Econo-Clad Books (U.S.)
(A) Library binding 1999 edition Introduction by Christina Scull. Edited by Wayne G. Hammond. ISBN0-61315123-2
Chivers, Windsor, Paragon & C
(A) Hardcover latge print 1998 edition Introduction by Christina Scull. Edited by Wayne G. Hammond. 186p ISBN0-75403485-2