| Clue | Source | Date |
|---|---|---|
| Home to more than 425 US wineries | LA Times Daily | 24 Jun 2021 |
| Home to more than 425 US wineries | The Washington Post | 24 Jun 2021 |
| Where Petaluma is | LA Times Daily | 01 Jul 2018 |
| Where Petaluma is | The Washington Post | 01 Jul 2018 |
| Where Petaluma is | ||
| Home to more than 250 wineries |