Historical clue formulations

• Or or nor: Abbr. — 2013-10-20
• Or or nor: Abbr. — 2012-12-02
• "And" or "or": Abbr. — 2012-10-09
• If, and or but: Abbr. — 2008-03-05
• And, e.g.: Abbr. — 2002-02-27
• Dictionary abbr. — 1998-05-03
• And, e.g.: Abbr. — 1996-10-08