| Clue | Source | Date |
|---|---|---|
| *Major coin producer in Colorado | LA Times Daily | 29 Jun 2026 |
| Major coin producer | New York Times | 14 Dec 2025 |
| Source of much U.S. coinage | USA Today | 17 Mar 2017 |
| What "D" may mean, monetarily | LA Times Daily | 28 Feb 2015 |
| What "D" may mean, monetarily | ||
| Moneymaker out West? | ||
| What "D" signifies on coins |