Historical clue formulations

• Missouri city, informally — 2018-06-06
• Pony Express's Missouri terminus, informally — 2016-09-21
• Missouri city, familiarly — 2014-10-14
• Missouri city, informally — 2014-05-31
• Missouri metro — 2011-08-12
• Missouri city, informally — 2010-10-12
• The Hawks of the Atlantic 10 conference, informally — 2009-12-23
• Missouri city, briefly — 2006-09-10
• NW Missouri city, informally — 2006-07-30
• Missouri city, briefly — 2002-12-20
• Missouri city, locally — 1995-06-24