Historical clue formulations

• Pearly ___ (entrance to heaven) — 2023-03-20
• Bill worth billions — 2022-03-09
• Flight board column — 2020-05-16
• Slalom obstacles — 2015-12-29
• Bill who co-owns the Four Seasons hotel company — 2013-04-23
• Track lineup — 2013-03-29
• Racetrack array — 2013-03-08
• Bush cabinet member — 2012-03-14
• Billionaire Bill — 2010-03-31
• Entrances to exclusive communities — 2010-01-26
• Mountain passes — 2009-06-26
• Slalom targets — 2007-10-19
• Fence openings — 2006-04-24
• Series on a ski slope — 2005-07-27
• 2005 Christo display in New York City, with "the" — 2005-07-18
• Bill of Microsoft — 2005-05-09
• Billionaire Bill — 2004-07-20
• Boarding areas — 2004-01-14
• Airport signs — 2003-11-20
• Bill from a computer company? — 2002-12-24
• Microsoft honcho — 2002-05-28
• Airport choices — 2000-03-24
• Forbes 400 list topper — 2000-01-06
• Bill in Washington? — 1998-03-28
• Fence openings — 1995-08-28
• Microsoft chief Bill — 1993-11-28