Historical clue formulations

• Deerstalker feature — 2020-01-18
• Batting helmet part — 2016-12-26
• Feature of a bomber hat — 2015-08-29
• Batting helmet feature — 2014-09-02
• One of two on a winter cap — 2012-06-25
• Certain hat feature — 2008-12-05
• Deerstalker fold-down — 2007-05-13
• Cold weather protector — 2004-12-12
• Winter cap feature — 2003-03-18
• Cold weather protector — 2002-09-22
• Cap feature — 1995-02-23