| Clue | Source | Date |
|---|---|---|
| 1666 conflagration that destroyed St. Paul's Cathedral | LA Times Daily | 23 Jan 2018 |
| 1666 conflagration that destroyed St. Paul's Cathedral | The Washington Post | 23 Jan 2018 |
| 1666 conflagration that destroyed St. Paul's Cathedral | ||
| "Great" 1666 conflagration |