| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 Artefacts and Curios | 95-138 |  Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The Beginning of the Agency | 19-21 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
 The Curious Case of Bare Knuckle Bill | 54-69 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The Early Years | 22-29 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Golden Square and its Environs | 48-53 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The Later Years | 40-47 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Ophelia Rising | 70-78 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Populating London | 79-87 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The Prime Years | 30-39 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
 Shoggites | Sep 2020 |  shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Spirits of London | |  The Spirits of London | SFX-3014 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Thorston, The Shunned Town On The Dee | | Thorston, The Shunned Town on the Dee | FXC-06 | 2019 | Stygian Fox | Call of Cthulhu (Gaslight) | England; 1890 |
| The Weapons of Hudson and Brand | 88-94 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The World of Hudson and Brand | 12-18 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
