| 2019-09-07 | Minnesota county or lake |
| 2018-09-23 | Lake that's the source of the Mississippi |
| 2016-04-27 | Lake that's the source of the Mississippi |
| 2016-04-10 | Lake that's the source of the Mississippi |
| 2015-03-07 | Minnesota county whose seat is Grand Rapids |
| 2014-09-14 | Lake that's the source of the Mississippi |
| 2013-04-06 | Minnesota county west of St. Louis |
| 2009-08-16 | Lake ___, source of the Mississippi |
| 2007-07-10 | Lake that is a source of the Mississippi |
| 2006-11-26 | Lake that's a source of the Mississippi |
| 2003-03-08 | Lake ___, source of the Mississippi |
| 2002-11-27 | Lake ___, source of the Mississippi |
| 2002-04-26 | Lake ___, source of the Mississippi |
| 1994-09-01 | Lake _____ (Mississippi's source) |