Creaciones
| ▲Título▼ | ▲C▼ | △Año▼ | ▲V▼ | ▲Concepto▼ |
|---|
| Closed Casket (junto a Paul Carrick) |   | 1997 | — | Escritor |
| Cult of One (junto a Paul Carrick) | | 1997 | — | Escritor |
| A Love in Need (junto a Paul Carrick) | | 1997 | — | Escritor |
| The Unsealed Room (junto a Paul Carrick) | | 1997 | — | Escritor |
| Magic (junto a Janice Engan, Keith Herber y Kevin Ross) |  | 1998 | — | Escritor |
| Arcane Antiquities (junto a Bruce Ballon) |  | 2000 | — | Escritor |
| A Restoration of Evil (junto a Paul Carrick y Drashi Khendup) | | 2000 | — | Escritor |
| Suggestions for Keepers | | 2000 | — | Escritor |
The Keeper's List of Lists  (junto a Paul Carrick) | ? | 2002 | — | Escritor |
| The Mythos Collector (junto a Paul Carrick) | | 2002 | — | Escritor |
| The Colour of His Eyes (junto a Paul Carrick y David Conyers) | | 2006 | — | Escritor |
| Creatures of the Mythos ("Malleus Monstrorum") (junto a Marion Anderson, Scott David Aniolowski, Bruce Ballon et al.) | | 2006 | — | Escritor |
| The Dig | | 2009 | — | Escritor |
| Stomach Acid (junto a David Conyers) |   | 2009 | — | Escritor |
| Introduction (to "Strange Aeons II") |  | 2010 | — | Escritor |
| Time After Time (junto a Adam Denton, David Lee Ingersoll, Bradley McDevitt y Marco Morte) | | 2010 | — | Escritor |
| The R'lyeh Singularity (junto a David Conyers) | | 2011 | — | Escritor |
| 1950s Sinister Seeds (junto a Christopher Smith Adair, Brian Courtemanche, Tom Lynch y Matt Sanborn) | | 2012 | — | Escritor |
| Forgotten Wars | | 2012 | — | Escritor |
| Introduction (to "Atomic-Age Cthulhu") | | 2012 | — | Escritor |
| Consumption | | 2013 | — | Escritor |
| Nameless City, Nameless Terrors | | 2013 | — | Escritor |
| The Terror From the Museum | | 2013 | — | Escritor |
| The Plawson Tapes | | 2014 | — | Escritor |
| Chapter 1: Field Trip (junto a Glynn Owen Barrass, Lynne Hardy, Mike Mason y Charles P. Zaglanis) | | 2016 | — | Escritor |
