Historical clue formulations

• The "R" of REM — 2025-10-29
• Fleet — 2025-03-09
• Breakneck — 2023-10-06
• Like an allegro tempo — 2023-03-05
• Fast-moving — 2022-09-02
• Swift — 2022-06-12
• Swift — 2022-05-16
• Fleet — 2021-04-16
• The "R" of the Bay Area's BART — 2020-06-07
• Word before fire or transit — 2018-08-07
• The "R" of 28-Across — 2018-03-09
• Quick — 2017-09-26
• See 5-Across — 2016-08-14
• Swift — 2016-01-04
• Allegro — 2014-12-18
• Fast — 2014-04-13
• Quick — 2014-01-27
• Speedy — 2012-05-28
• ___-fire — 2012-03-31
• ___ City, S.D. — 2010-11-23
• Swift — 2010-02-01
• Galloping — 2010-01-17
• Swift — 2009-08-03
• Fleet — 2003-12-28
• Speedy — 2003-09-01
• Swift — 2003-08-18
• Galloping — 2003-07-20
• Galloping — 2002-06-23
• Part of I.R.T. — 2001-06-28
• Galloping — 2001-01-31
• Swift — 2000-12-04
• Like some transit — 1999-10-24
• Fleet — 1996-05-08
• Celeritous — 1995-10-06
• Allegro — 1995-08-08
• Speedy — 1995-06-05
• Word before fire or transit — 1994-04-18