Creaciones
| △Título▼ | ▲C▼ | ▲Año▼ | ▲V▼ | ▲Concepto▼ |
|---|
| 1950s Sinister Seeds (junto a Christopher Smith Adair, Brian Courtemanche, Tom Lynch y Matt Sanborn) |   | 2012 | — | Escritor |
| Arcane Antiquities (junto a Bruce Ballon) |  | 2000 | — | Escritor |
| Chapter 1: Field Trip (junto a Glynn Owen Barrass, Lynne Hardy, Mike Mason y Charles P. Zaglanis) |  | 2016 | — | Escritor |
| Chapter 2: Back to School (junto a Glynn Owen Barrass, Lynne Hardy, Mike Mason y Charles P. Zaglanis) | | 2016 | — | Escritor |
| Chapter 3: Federated Oil and Chemical (junto a Glynn Owen Barrass, Lynne Hardy, Mike Mason y Charles P. Zaglanis) | | 2016 | — | Escritor |
| Chapter 4: Dark Delvings (junto a Glynn Owen Barrass, Lynne Hardy, Mike Mason y Charles P. Zaglanis) | | 2016 | — | Escritor |
| Chapter 5: Is That You, Mother? (junto a Glynn Owen Barrass, Lynne Hardy, Mike Mason y Charles P. Zaglanis) | | 2016 | — | Escritor |
| Chapter 6: Mission to the Moon (junto a Glynn Owen Barrass, Lynne Hardy, Mike Mason y Charles P. Zaglanis) | | 2016 | — | Escritor |
| A Cleansing Flame | | 2021 | — | Escritor |
| Closed Casket (junto a Paul Carrick) | | 1997 | — | Escritor |
| The Colour of His Eyes (junto a Paul Carrick y David Conyers) | | 2006 | — | Escritor |
| Consumption | | 2013 | — | Escritor |
| Creatures of the Mythos ("Malleus Monstrorum") (junto a Marion Anderson, Scott David Aniolowski, Bruce Ballon et al.) | | 2006 | — | Escritor |
| Cult of One (junto a Paul Carrick) | | 1997 | — | Escritor |
| Dark and Deep | | 2021 | — | Escritor |
| The Dig | | 2009 | — | Escritor |
| Eye of the Beholder | | 2021 | — | Escritor |
Forget Me Not  | | 2016 | 6.00 | Escritor |
| Forgotten Wars | | 2012 | — | Escritor |
| Frozen Footsteps | | 2021 | — | Escritor |
| Grab the Machete or: How I Learned to Stop Going Insane and Love 80s Horror Movies | | 2020 | — | Escritor |
| Introduction (to "Atomic-Age Cthulhu") | | 2012 | — | Escritor |
| Introduction (to "Doors to Darkness") | | 2016 | — | Escritor |
| Introduction (to "Strange Aeons II") | | 2010 | — | Escritor |
| The Keeper's List of Lists (junto a Paul Carrick) | ? | 2002 | — | Escritor |
