Edgar Trevor Williams · T. Williams · Trefor Williams · Trevor I. Williams · Trevor Illtyd Williams
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| House of Dark Shadows | 6301969634 (6301969634) | 1998 | Arthur J. Ornitz · Dan Curtis · Arline Garson · Gordon Russell · Sam Hall |
| Night of Dark Shadows | 6301971418 (6301971418) | 1998 | Charles Goldsmith · Dan Curtis · George Goodman · Richard Shore · Sam Hall |
| The Changing Faces of St. Clements and East Oxford: Bk. 2 | 978-1-899536-19-1 (1-899536-19-1) | 1998 | Susanne Shatford |