Historical clue formulations

• Letter container: Abbr. — 2020-10-12
• It might get a licking: Abbr. — 2020-05-24
• Part of S.A.S.E.: Abbr. — 2018-12-30
• Letter holder: Abbr. — 2016-11-21
• It might have a street name: Abbr. — 2016-09-08
• Part of S.A.S.E.: Abbr. — 2016-03-21
• It's stamped at the P.O. — 2014-10-13
• Card holder: Abbr. — 2014-01-01
• Letter holder: Abbr. — 2013-12-16
• Stationery item: Abbr. — 2013-08-25
• Card holder: Abbr. — 2011-04-18
• Letter holder: Abbr. — 2010-08-23
• Oscars prop: Abbr. — 2010-05-13
• Letter holder: Abbr. — 2010-03-22
• Part of S.A.S.E.: Abbr. — 2009-04-08
• P.O. delivery — 2008-08-17
• Posted item: Abbr. — 2008-08-02
• Check holder: Abbr. — 2008-03-16
• P.O. item — 2007-05-13
• Ltr. holder — 2007-04-17
• Posting need: Abbr. — 2006-06-16
• Prop for the Acad. Awards — 2005-08-14
• Part of S.A.S.E.: Abbr. — 2005-07-17
• Ltr. container — 2005-01-05
• It may get licked: Abbr. — 2004-01-02
• Postal delivery: Abbr. — 2003-11-02
• Stamp's place: Abbr. — 2003-09-29
• Letter container: Abbr. — 2003-07-01
• Ltr. holder — 2003-02-11
• Post delivery: Abbr. — 2002-11-21
• It may get stuffed: Abbr. — 2002-01-17
• It may have a window: Abbr. — 2001-12-29
• Post delivery: Abbr. — 1999-10-01
• Letter carrier?: Abbr. — 1999-09-04
• Part of SASE: Abbr. — 1998-01-15
• Encl. with a submission — 1997-05-03
• Part of S.A.S.E.: Abbr. — 1995-12-03
• Stationery item: Abbr. — 1994-02-19