ANILS
| Date | Clue |
|---|---|
| 2015-09-20 | Indigo plants |
| 2006-04-16 | Dye-yielding shrubs |
| 2005-12-28 | Dye-yielding plants |
| 2004-10-14 | Dye-yielding shrubs |
| 2003-01-16 | Blue dyes |
| 2002-05-02 | "___ Ghost" (Michael Ondaatje novel) |
| 1998-12-06 | Indigo-yielding shrubs |
| 1998-03-14 | Dye-yielding shrubs |
| 1997-09-06 | Indigo-yielding shrubs |