| 2026-07-23 | Cabinet dept. since 1889 |
| 2022-07-17 | Part of U.S.D.A.: Abbr. |
| 2019-02-21 | Cabinet dept. concerned with farming |
| 2016-11-01 | Cabinet dept. |
| 2016-03-24 | Cabinet dept. |
| 2015-05-12 | The "A" of U.S.D.A.: Abbr. |
| 2014-05-31 | Field of fields?: Abbr. |
| 2014-04-02 | Cabinet-level dept. since 1889 |
| 2013-03-17 | Cabinet dept. |
| 2012-10-14 | Cabinet dept. since 1889 |
| 2012-06-20 | U.S.D.A. part: Abbr. |
| 2012-03-08 | Cabinet dept. |
| 2012-02-01 | Cabinet dept. |
| 2011-05-09 | Farm-related: Abbr. |
| 2010-10-01 | Cabinet dept. |
| 2010-04-20 | Cabinet dept. overseeing farm interests |
| 2009-07-09 | U.S.D.A. part: Abbr. |
| 2009-02-13 | Field of field workers: Abbr. |
| 2007-08-22 | Cabinet dept. |
| 2007-03-25 | A cabinet dept. |
| 2006-10-28 | Farming area: Abbr. |
| 2006-10-03 | Cabinet post: Abbr. |
| 2004-11-16 | Farmer's sci. |
| 2004-05-21 | Cabinet dept. |
| 2004-01-22 | Cabinet dept. |
| 2003-06-19 | Cabinet dept. |
| 2002-11-20 | Cabinet dept. |
| 2002-09-08 | Cabinet dept. |
| 2002-03-10 | Farmer's field: Abbr. |
| 2002-01-06 | Part of U.S.D.A.: Abbr. |
| 2001-03-10 | Cabinet dept. |
| 2001-02-20 | Cabinet Dept. |
| 2001-02-10 | Purdue Univ. major |
| 1999-09-16 | Cabinet Dept. |
| 1999-02-21 | Cabinet dept. |
| 1998-06-13 | Cabinet Dept. |
| 1998-02-23 | Farming: Abbr. |
| 1997-11-22 | Farmer's field: Abbr. |
| 1997-01-25 | Cabinet Dept. |
| 1996-11-03 | Cabinet dept. |
| 1996-01-01 | Farming: Abbr. |
| 1995-04-04 | Cabinet dept. |
| 1994-12-04 | Cabinet dept. |
| 1994-09-16 | Cabinet dept. |
| 1994-08-03 | Cabinet dept. |
| 1994-06-21 | Farming: Abbr. |
| 1994-03-27 | Farm-related: Abbr. |