| Clue | Source | Date |
|---|---|---|
| Further explanation in an article (... the ends of this answer and the one below it) | Universal | 13 Mar 2024 |
| Further explanation in an article | ||
| One may open an issue | New York Times | 02 Dec 2016 |
| One may open an issue | ||
| Often-bracketed addition | ||
| Brief words from Greeley |