| Clue | Source | Date |
|---|---|---|
| Letters after either Cowboy St. senator's name | LA Times Daily | 05 Nov 2021 |
| Train system: Abbr | New York Times | 23 May 2017 |
| Train syst | New York Times | 09 Apr 2017 |
| Train system: Abbr. | ||
| Train syst. | ||
| Letters after either Cowboy St. senator's name | LA Times Daily | 10 Jul 2016 |
| Letters after either Cowboy St. senator's name | ||
| Amtrak, for ex. | ||
| Freight carrier: Abbr. | ||
| Line with tracks (abbr.) | ||
| Train network: Abbr. | ||
| Streetcar line (abbr.) | ||
| The Orient Express, e.g.: Abbr. | ||
| Erie Lackawanna, e.g.: Abbr. | ||
| Train syst. |