Historical clue formulations

• Open-book examinations? — 2020-06-14
• Tax cheats' fears — 2017-07-17
• I.R.S. inspections — 2014-04-08
• Unwelcome financial exams — 2010-04-06
• I.R.S. scares — 2008-07-08
• Reviews, as books — 2002-10-04
• Financial checks — 2001-07-31
• I.R.S. visits — 1998-05-12
• Tax evaders' bugbears — 1994-10-30
• Accountants' activities — 1994-10-24