Historical clue formulations

• It's on the up and up — 2026-08-12
• Budding — 2026-07-23
• Part of a flight in which seatbelts must be worn — 2024-06-02
• What's on the up and up? — 2024-02-03
• Initial part of a roller coaster ride — 2021-08-25
• Goal for a mountaineer — 2017-05-29
• Mountain climber's climb — 2014-05-27
• Way up — 2009-05-29
• Way up — 2006-09-21
• Way up — 2006-04-20
• Rise — 2006-04-05
• Way up — 2004-08-01
• Half a mountaineering expedition — 2002-08-08
• Mountaineer's effort — 2000-05-28
• Trip up a mountain — 1999-10-12
• Rise — 1995-06-01