OCTAVO
| Date | Clue |
|---|---|
| 2019-08-03 | Book page size |
| 2015-02-19 | Book size |
| 2012-05-12 | Smallish printing format |
| 2010-07-10 | Book size |
| 2007-08-06 | Book size |
| 2004-09-09 | Book specification |
| 2003-11-27 | Book size |
| 2000-08-25 | 6 x 9-inch book size |
| Date | Clue |
|---|---|
| 2019-08-03 | Book page size |
| 2015-02-19 | Book size |
| 2012-05-12 | Smallish printing format |
| 2010-07-10 | Book size |
| 2007-08-06 | Book size |
| 2004-09-09 | Book specification |
| 2003-11-27 | Book size |
| 2000-08-25 | 6 x 9-inch book size |