Historical clue formulations

• Abbr. at the bottom of a business letter — 2026-06-10
• Pkg. insert — 2020-12-18
• Envelope abbr. — 2020-06-28
• S.A.S.E., e.g.: Abbr. — 2018-11-18
• Accompanier of a letter inside an env. — 2018-09-24
• Bottom-of-letter abbr. — 2017-10-11
• Cover letter abbr. — 2017-05-10
• Ltr. addition — 2017-05-08
• Letter insert: Abbr. — 2017-04-11
• Abbr. at the bottom of a letter — 2016-10-17
• Envelope abbr. — 2015-02-01
• Went around — 2014-07-24
• Letter abbr. — 2013-08-02
• Pkg. insert — 2013-04-14
• Britannica, for one: Abbr. — 2012-07-24
• S.A.S.E., for one — 2012-01-11
• Abbr. on a cover letter — 2011-04-10
• S.A.S.E., e.g. — 2010-03-21
• S.A.S.E., e.g. — 2009-09-20
• Bottom-of-letter abbr. — 2009-08-11
• Business letter abbr. — 2009-03-25
• Business letter abbr. — 2009-01-28
• Cover-letter letters — 2008-06-06
• Abbr. at the bottom of a letter — 2008-02-24
• S.A.S.E., e.g. — 2008-01-01
• Letter-ending abbr. — 2007-07-22
• Business letter abbr. — 2006-12-30
• Bottom-of-letter abbr. — 2006-08-16
• Ltr. accompanier — 2006-07-14
• Collier's work: Abbr. — 2006-07-01
• Env. insertion — 2006-03-06
• Business letter abbr. — 2005-08-18
• Business letter abbr. — 2004-06-21
• Letter accompanier: Abbr. — 2004-05-11
• Collier's, for one: Abbr. — 2004-01-23
• Letter accompanier: Abbr. — 2003-07-20
• Stamped return env., e.g. — 2003-03-03
• Ltr. insert — 2002-09-29
• Dict. shelfmate — 2002-03-02
• Business letter abbr. — 2002-01-25
• Letter abbr. — 2001-12-01
• Business letter abbr. — 2001-10-24
• Env. extra — 2001-08-21
• Ref. work — 2001-07-07
• Business letter abbr. — 2001-03-01
• Abbr. in a business letter — 2000-12-28
• Business letter abbr. — 2000-07-11
• Volume purchase?: Abbr. — 2000-05-19
• Letter abbr. — 2000-04-28
• Abbr. on a business letter — 2000-04-05