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1920s Background Information
1920s Categories
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Index background Series Search: 1920s (21 results)
| 1920s City Guidebooks | Chaosium | Call of Cthulhu 5-6 |
| 1920s Investigators' Companions | Chaosium | Call of Cthulhu 5 |
| After Lovecraft | OtherWorld Creations Super Genius Games | Call of Cthulhu 6 |
| Age of Cthulhu | Goodman Games | Call of Cthulhu 6 |
| Alone Against ... | Chaosium | Call of Cthulhu 2-7 |
| Call of Cthulhu 5.5 Edition Core Rulebooks | Chaosium | Call of Cthulhu 5.5 |
| CoC Keeper's Companions | Chaosium | Call of Cthulhu 5.5 |
| Cthulhu Britannica | Cubicle 7 Entertainment | Call of Cthulhu 6 |
| Cthulhu Classics Reprints | Chaosium | Call of Cthulhu 4 |
| Cthulhu Companions | Chaosium | Call of Cthulhu 1-2 |
| Cthulhu Fiction | Chaosium Elder Signs Press | Fiction Generic |
| Free RPG Day 2010 | Various Publishers | Various Systems |
| Genre Books | I.C.E. | Rolemaster 3 |
| Halloween Horror | Chaosium | Call of Cthulhu 6 |
| Investigator Weapons | Sixtystone Press | Call of Cthulhu 6 |
| King of Chicago/Secret of Marseille | Chaosium SmiteWorks | Call of Cthulhu 6 |
| Mysteries Setting Monographs | Chaosium | Call of Cthulhu 5.5-7 |
| One-Shots | 6d6Fireball.com | 6d6 Core 1 |
| Secrets Of .. Setting Books | Chaosium | Call of Cthulhu 6-7 |
| The "GB" (Gang Busters) Adventures | TSR | GangBusters 1 |
| TUO The Resurrected | Pagan Publishing | Call of Cthulhu 5-5.5 |