BIRCH
| Date | Clue |
|---|---|
| 2025-07-30 | Tree with papery bark |
| 2023-08-18 | Canoe maker's bark |
| 2021-10-13 | Tree with papery bark |
| 2018-03-14 | Source of bark for canoes |
| 2017-12-19 | Tree with smooth bark |
| 2016-12-25 | Canoe builder's bark source |
| 2016-07-11 | Tree with papery bark |
| 2014-10-02 | Kind of beer |
| 2006-03-29 | Graceful tree |
| 2002-10-03 | Switch material |
| 2002-05-05 | Switch material |
| 2002-04-17 | Canoe material |
| 1997-10-15 | Hazel's cousin |