| Clue | Source | Date |
|---|---|---|
| Result of a leaking 4-Down, perhaps | LA Times Daily | 04 May 2026 |
| Stain from a pen | New York Times | 26 Apr 2026 |
| Pocket protector failure | Wall Street Journal | 17 Jun 2024 |
| Result of a breast pocket mishap, maybe | New York Times | 24 Jan 2021 |
| Hard-to-remove stain | ||
| Manufacturer's sign on pottery |