| Clue | Source | Date |
|---|---|---|
| 'Ult.' in formal letter means 'of ___-' (4,5) | ||
| A few weeks ago, probably | New York Times | 11 Sep 2022 |
| Period covered by a utility bill, perhaps | The New Yorker | 28 Oct 2019 |
| “Ultimo” used to mean “of the ____” in business letters | The Times Specialist Sunday | 28 Oct 2018 |