Historical clue formulations

• Apply, as a coat of paint — 2020-06-16
• "___, Macduff" (phrase from Shakespeare) — 2019-08-25
• Apply, as coat of paint — 2007-07-24
• Apply, as a coat of wax — 2001-11-26
• Command to Macduff — 1998-05-13
• Cry to Macduff — 1996-03-06
• Imperative to Macduff — 1994-09-14
• Instructions to Macduff — 1994-05-17