Historical clue formulations

• Org. leader — 2026-07-30
• Univ. bigwig — 2020-06-19
• R.M.N. or L.B.J. — 2020-01-02
• Air Force One passenger: Abbr. — 2018-12-04
• Part of Potus: Abbr. — 2018-02-18
• U.S. 1? — 2018-01-04
• Top exec. — 2015-04-21
• One aboard Marine One: Abbr. — 2014-11-14
• Air Force One passenger: Abbr. — 2014-11-10
• Secret Service's charge: Abbr. — 2014-09-10
• Near: Fr. — 2014-03-22
• Cabinet maker?: Abbr. — 2012-06-08
• Three-term title for 22-Across: Abbr. — 2012-03-01
• Roosevelt, Wilson, Carter or Obama: Abbr. — 2011-12-19
• Certain tense: Abbr. — 2011-03-03
• P.M. counterpart — 2011-01-07
• U. V.I.P. — 2010-11-13
• Corp. V.I.P. — 2010-06-20
• Top exec. — 2008-04-01
• Firm wheel: Abbr. — 2007-08-11
• White House occupant: Abbr. — 2007-08-07
• Alternative to Meth. or Luth. — 2007-01-25
• Corp. honcho — 2006-07-23
• Board member: Abbr. — 2006-05-07
• F.D.R. or J.F.K. — 2006-01-09
• Article II subj. — 2005-08-21
• J.F.K. or Dubya — 2005-04-25
• Firm boss: Abbr. — 2005-03-27
• Co. V.I.P. — 2004-12-26
• Firm head: Abbr. — 2004-12-10
• Member of a board of dirs. — 2004-07-13
• Air Force One passenger: Abbr. — 2004-05-18
• Penn. Ave. resident — 2002-11-10
• Firm head: Abbr. — 2002-07-20
• Johnson or Johnson: Abbr. — 2001-09-21
• F.D.R. or D.D.E. — 2000-12-06
• Exec. — 1999-07-02
• P.M. counterpart — 1999-01-17
• Executive: Abbr. — 1997-09-16
• Nov. electee — 1997-02-25
• D.C. V.I.P. — 1996-03-27
• C.E.O. — 1996-03-10
• Chief exec — 1996-01-19
• H.S.T. was one — 1996-01-14
• Clinton, e.g.: Abbr. — 1995-11-27
• J.F.K., for one — 1995-08-08
• C. in C. — 1995-07-08
• H.S.T. or D.D.E. — 1994-12-16
• H.S.T. or R.M.N. — 1994-11-27
• C.E.O. — 1994-06-12