Historical clue formulations

• ___ Duncan, education secretary under Obama — 2026-07-26
• Former education secretary Duncan — 2023-02-23
• "Rule, Britannia" composer — 2021-07-16
• ___ Duncan, Obama education secretary — 2021-06-23
• "A-Hunting We Will Go" composer — 2019-12-21
• Duncan of the Obama cabinet — 2018-08-29
• Obama education secretary Duncan — 2018-08-16
• Thomas ___, "Rule, Britannia" composer — 2018-02-05
• "Rule, Britannia" composer — 2017-07-19
• Composer of "A-Hunting We Will Go" — 2016-12-17
• ___ Duncan, Obama education secretary — 2016-12-07
• Composer Thomas — 2016-08-17
• ___ Saknussemm, discoverer of the center of the earth in "Journey to the Center of the Earth" — 2016-08-04
• Former education secretary Duncan — 2016-03-05
• Duncan of Obama's cabinet — 2015-07-30
• Egg chair designer Jacobsen — 2014-10-18
• Duncan of Obama's cabinet — 2014-07-11
• Education secretary Duncan — 2014-05-11
• "Rule, Britannia" composer — 2014-03-10
• "Rule, Britannia" composer Thomas — 2014-01-20
• English composer Thomas — 2013-09-19
• Obama education secretary Duncan — 2013-01-23
• "Rule Britannia" composer — 2012-09-16
• Obama education secretary Duncan — 2012-03-15
• "Rule, Britannia" composer — 2012-01-23
• "Rule, Britannia" composer — 2011-03-29
• "Rule, Britannia" composer — 2010-07-04
• Obama education secretary ___ Duncan — 2010-03-31
• Former Minnesota governor Carlson — 2010-02-24
• "Rule, Britannia" composer — 2010-01-24
• Composer Thomas — 2009-09-20
• "Rule, Britannia" composer Thomas — 2008-12-25
• "Rule, Britannia" composer — 2008-10-26
• Swedish Chemistry Nobelist Tiselius — 2008-07-06
• Composer Thomas — 2008-06-22
• Composer of "Dido and Aeneas" — 2008-05-25
• "Rule, Britannia" composer — 2008-05-12
• "Rule, Britannia" composer — 2008-05-06
• "Rule, Britannia" composer — 2008-04-08
• "Rule, Britannia" composer — 2007-09-19
• 1948 Chemistry Nobelist Tiselius — 2006-10-20
• Olympic gold-medal swimmer ___ Borg — 2006-04-14
• "Rule, Britannia" composer — 2006-02-07
• "Rule, Britannia" composer — 2005-08-25
• "Rosamund" composer — 2005-05-26
• "Comus" composer — 2005-05-08
• "Artaxerxes" composer — 2005-03-04
• "Thomas and Sally" composer — 2005-02-18
• "Rule Britannia" composer — 2004-06-08
• "Artaxerxes" composer — 2003-06-08