| Clue | Source | Date |
|---|---|---|
| Ice-removing tools | Eugene Sheffer | 14 Mar 2025 |
| Paint removers | Eugene Sheffer | 11 Jul 2024 |
| Road graders | The Washington Post | 13 Aug 2016 |
| Painters' tools | ||
| Winter driving necessities | ||
| Handy devices for winter drivers | ||
| Windshield cleaners | ||
| Windshield clearers in winter | ||
| House painters' needs | ||
| Road levelers | ||
| Road graders | ||
| Bulldozers for leveling air fields. | ||
| Road graders. | ||
| Etchers' tools. | ||
| Road machines. |