McFarland & Company · Open Court · Open Court Publishing Company
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| A Tolkien Compass | 978-0-87548-303-0 | 2003 |
| A Tolkien Compass: Including J. R. R. Tolkien's Guide to the Names in the Lord of the Rings | 978-0-87548-316-0 | 1975 |
| The Scientifiction Novels of C. S. Lewis: Space and Time in the Ransom Stories | 978-0-7864-1824-4 | 2004 |
| The World of the Rings: Language, Religion, and Adventure in Tolkien | 978-0-8126-9569-4 | 2004 |