| ▲Título▼ | ▲C▼ | △Año▼ | ▲V▼ | ▲Concepto▼ |
|---|---|---|---|---|
| Appendices (to "Beyond the Mountains of Madness") (junto a Phil Anderson, Marion Anderson, Mike Blum et al.) |   | 1999 | — | Escritor |
| Handouts (to "Beyond the Mountains of Madness") (junto a Mike Blum, Charles Engan, Janice Engan y John T. Snyder) | | 1999 | — | Escritor |
| The Patriot |   | 2009 | — | Escritor |
