| 2023-02-26 | Thought spot |
| 2021-01-24 | "The ___ -- is wider than the Sky" (start of an Emily Dickinson poem) |
| 2020-11-29 | The thought is there |
| 2019-08-07 | Hard drive, essentially |
| 2019-06-14 | Einstein |
| 2019-03-26 | Scarecrow's desire in "The Wizard of Oz" |
| 2019-02-03 | Genius |
| 2012-02-24 | It's all in your head |
| 2011-02-13 | With 25-Across, a puzzle |
| 2010-06-14 | Cranium contents |
| 2010-01-19 | Smarty |
| 2009-08-28 | Major processing center |
| 2009-08-24 | Cranium contents |
| 2009-04-19 | Computer's center, informally |
| 2007-11-26 | Scarecrow's wish in "The Wizard of Oz" |
| 2007-07-12 | Word that can precede the starts of 17-, 35- and 54-Across and 16-Down |
| 2003-10-22 | Control center |
| 2000-01-06 | Genius |
| 1999-04-27 | Einstein |
| 1998-06-20 | Egghead |
| 1997-04-16 | Genius |
| 1994-03-24 | Einstein |
| 1994-03-07 | Whiz kid |