Historical clue formulations

• "___ know" ("O.K., O.K.") — 2011-07-12
• "___ Can" (Sammy Davis Jr. autobiography) — 2008-08-13
• Sammy Davis Jr.'s "___ Can" — 2008-07-23
• Sammy Davis Jr.'s "___ Can" — 2007-03-15
• "Can" opener? — 2006-07-31
• Sammy Davis Jr.'s "___ Can" — 2006-01-26
• Sammy Davis Jr.'s "___ Can" — 2003-01-19
• "___ Can" (Sammy Davis Jr. book) — 2001-12-31
• "___ Am" (Melissa Etheridge title track) — 2001-09-21
• Webb Pierce song "___ Know Why" — 2001-01-14
• Sammy Davis's "___ Can" — 1997-02-21