Creaciones
| ▲Título▼ | ▲C▽ | ▲Año▼ | ▲V▼ | ▲Concepto▼ |
|---|
| Deities of the Mythos ("The Creature Companion") (junto a Phil Anderson, Marion Anderson, Scott David Aniolowski et al.) |   | 1998 | — | Escritor |
| Deities of the Mythos ("Malleus Monstrorum") (junto a Phil Anderson, Marion Anderson, Scott David Aniolowski et al.) | | 2006 | — | Escritor |
| Creatures of the Mythos ("Ye Booke of Monstres II") (junto a Phil Anderson, Marion Anderson, Bill Barton et al.) | | 1995 | — | Escritor |
| Creatures of the Mythos ("The Creature Companion") (junto a Scott David Aniolowski, Shannon Appelcline, Bill Barton et al.) | | 1998 | — | Escritor |
| Creatures of the Mythos ("Malleus Monstrorum") (junto a Marion Anderson, Scott David Aniolowski, Bruce Ballon et al.) | | 2006 | — | Escritor |
| Creatures of the Mythos ("Ye Booke of Monstres") (junto a Scott David Aniolowski, Fred Behrendt, John Carnahan et al.) | | 1994 | — | Escritor |
| A Brief History of Arkham | | 1990 | — | Escritor |
| Alien Races (junto a Scott David Aniolowski) | | 1993 | — | Escritor |
| 1920s Forensic Arts (junto a Gary O'Connell) | | 1994 | — | Escritor |
| Where A God Shall Tread (junto a Scott David Aniolowski, Earl Geier y Lynn Willis) |  | 1990 | — | Escritor |
| Wail of the Witch | | 1990 | — | Escritor |
| The Wail of the Witch | | 1983 | — | Escritor |
Uncle Timothy's Will  | | 1990 | 8.00 | Escritor |
| Ulthar and Beyond (junto a Kevin Ramos y Carolyn Schultz-Savoy) | | 1986 | — | Escritor |
| Trail of Yig (junto a Erik Herber y John T. Snyder) | | 1991 | 5.50 | Escritor |
| The Trail of Tsathogghua | | 1984 | 5.00 | Escritor |
| Chapter II: The Thing in the Well | | 1984 | — | Escritor |
| St. Augustine (junto a Kevin Ramos y Carolyn Schultz-Savoy) | | 1986 | — | Escritor |
| The Spawn of Azathoth (junto a Kevin Ramos y Carolyn Schultz-Savoy) | | 1986 | — | Escritor |
| Sinister Seeds (junto a Fred Behrendt, Penelope Love, Mark Morrison et al.) | | 1992 | — | Escritor |
| Chapter IV: Sands of Time | | 1984 | 9.00 | Escritor |
| The Sanatorium | | 1990 | 9.00 | Escritor |
| Return to Dunwich (junto a John T. Snyder) | | 1991 | — | Escritor |
| Providence, Rhode Island (junto a Kevin Ramos y Carolyn Schultz-Savoy) | | 1986 | 6.00 | Escritor |
| Proof of Life (junto a Jason C. Eckhardt) | | 2009 | — | Escritor |
