Historical clue formulations

• Ski lift varieties — 2018-08-21
• Mountain climbers? — 2016-06-17
• Lifts up a mountain — 2016-04-10
• Winter athletes' pull-ups? — 2014-03-15
• Towers in the high country? — 2011-05-08
• Some ski lifts — 2010-08-23
• People travel only one way on them — 2010-02-19
• *Alternatives to rope tows — 2007-07-05
• Ways up the slopes — 2004-09-29
• Ski lifts — 2003-11-17
• They give some vacationers a lift — 2003-05-31
• Skiers' lifts — 2003-03-18
• People travel only one way on them — 2003-01-23
• Skiers' transports — 2002-05-27
• They'll give you a lift — 1998-03-06
• Ski lifts — 1994-12-07
• Lifts of a sort — 1994-02-02