| Clue | Source | Date |
|---|---|---|
| Type of markers for whiteboards | Newsday | 25 Sep 2022 |
| Like some boards and markers | Universal | 05 Apr 2022 |
| Whiteboard category | Newsday | 11 Apr 2021 |
| Like some boards | The New Yorker | 04 Feb 2019 |
| Like whiteboards | The Chronicle of Higher Education | 07 Sep 2018 |
| Like whiteboards | ||
| Crayola category | ||
| Like some boards |