Articles (3)
| Title | Pages | Publication | Code | Date | Publisher | System (Setting) | |
|---|---|---|---|---|---|---|---|
 The Secret of Castronegro | 46-59 |  Cthulhu Companion | CHA2304 | 1983 | Chaosium | Call of Cthulhu (Classic) | New Mexico; October |
| The Secret of Castronegro | 166-179 |  Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic) | New Mexico; October |
| The Secret of Castronegro | 128-141 | Cthulhu Classics | CHA3301 | 1989 | Chaosium | Call of Cthulhu (Classic) | New Mexico; October |