| Clue | Source | Date |
|---|---|---|
| What a bibliophile prizes | New York Times Midi | 20 Mar 2026 |
| Valuable volume | Eugene Sheffer | 11 Nov 2025 |
| Valuable volume | Eugene Sheffer | 20 Dec 2022 |
| Valuable volume | Eugene Sheffer | 04 Feb 2019 |
| Bibliophile's prize | New York Times | 11 May 2016 |
| Valuable volume | ||
| Bibliophile's pursuit | ||
| Novel that's hard to grasp? |