Historical clue formulations

• Extra: Abbr. — 2022-10-13
• Not incl. — 2020-08-09
• Extra, in ads — 2016-08-12
• Not incl. — 2015-03-24
• Extra: Abbr. — 2014-05-25
• Extra: Abbr. — 2010-10-20
• Like shipping and handling, typically: Abbr. — 2008-12-04
• Not included: Abbr. — 2007-05-13
• Extra: Abbr. — 2004-03-18
• Supplementary: Abbr. — 2003-08-13
• Extra, in ads — 2002-12-12
• Extra: Abbr. — 2000-08-19
• Extra: Abbr. — 1996-09-15
• Not included: Abbr. — 1996-08-16