| Clue | Source | Date |
|---|---|---|
| Sites with rails and posts | Wall Street Journal | 02 Nov 2022 |
| Triple Crown venues | LA Times Daily | 22 Jul 2018 |
| Triple Crown venues | The Washington Post | 22 Jul 2018 |
| Triple Crown venues | ||
| Where bets are made | ||
| Ovals | ||
| NASCAR venues | ||
| NASCAR venues | ||
| Churchill Downs and Belmont Park | ||
| Pimlico Belmont etc. | ||
| Woodbine, Aqueduct and others. | ||
| Aqueduct, Hialeah, etc. | ||
| Saratoga and others. | ||
| Hialeah, Belmont, etc. |