At Your Door
| Publisher | Chaosium, Inc. |
| Artist | Lee Gibbons, Earl Geier, Martha J. McNulty |
| Layout by/Layout Coordinator | John B. Monroe, Charlie Krank |
| Copy Editor | Anne Merritt |
| Format | Soft cover |
| Language | English |
| Location | Oakland, CA |
| Copyright | 1990 |
| Pages / Font | 147 pages |
| ISBN | 0-933635-64-8 |
| Catalog Number | Chaosium publication 2326 |
| Chapters | Full Wilderness Landscrapes Dawn Biozyme No Pain, No Gain Where A God Shall Tread After The Big One |
| Notes | A supplement for Call of Cthulhu role-playing game (4th edition) / Cthulhu Now (modern era). A campaign including 6 scenarios. First edition. |
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