Historical clue formulations

• That's the ticket! — 2019-05-18
• 1948 Triple Crown winner — 2018-04-10
• [1948] — 2015-06-09
• Officer's "gift" — 2014-03-07
• TICKET — 2006-05-10
• 1948 Triple Crown winner — 2004-05-05
• 1948 Triple Crown winner — 1995-12-29