Historical clue formulations

• Airport acquisitions — 2024-06-20
• They can get canceled — 2020-08-16
• Philatelist's collection — 2017-04-16
• They get stuck in corners — 2013-04-13
• Sticky roll? — 2011-09-04
• They may come in sheets — 2009-07-21
• Collecting field — 2000-05-17
• Postage — 2000-01-13
• Philatelist's collection — 1999-12-22
• Post-office pane — 1994-01-30