| Clue | Source | Date |
|---|---|---|
| Some black-and-white drawings | Thomas Joseph | 15 Apr 2025 |
| Pen-and-ink drawings | Newsday | 22 Nov 2023 |
| Illustrations without shades and hues | LA Times Daily | 03 Oct 2020 |
| Illustrations without shades and hues | The Washington Post | 03 Oct 2020 |
| Pen-and-ink illustrations | USA Today | 23 Oct 2017 |
| Pen-and-ink drawings | Newsday | 25 Jun 2017 |
| Pen-and-ink illustrations | ||
| Graphic material with no gray areas | Premier Sunday | 23 Oct 2016 |
| Hand-drawn illustrations | Newsday | 25 Feb 2016 |
| Drawing often in ink |