ONECENT
| Date | Clue |
|---|---|
| 2012-05-07 | Words below the Lincoln Memorial |
| 2007-04-03 | Words below the Lincoln Memorial |
| 2005-11-24 | Minimal postage hike |
| 2005-03-11 | Minimal amount |
| 2000-11-23 | Bygone Tootsie Roll price |
| 2000-08-24 | Like old postcards |
| 1997-10-12 | Like early postcards |
| 1996-01-26 | Copper |