Historical clue formulations

• Subway stops: Abbr. — 2023-10-15
• Railroad stops: Abbr. — 2022-06-01
• Amtrak stops: Abbr. — 2019-01-13
• Depots: Abbr. — 2014-01-26
• Amtrak stops: Abbr. — 2013-12-06
• Metro map points: Abbr. — 2013-08-07
• Platform locales: Abbr. — 2013-08-04
• Radio choices: Abbr. — 2011-02-13
• Dots on some maps: Abbr. — 2009-09-25
• Boarding zones: Abbr. — 2009-06-18
• RR stops — 2007-01-07
• TV Guide listings: Abbr. — 2006-02-18
• Boarding places: Abbr. — 2006-01-06
• Channels: Abbr. — 2005-12-04
• Stops: Abbr. — 2004-02-12
• Stops along the line: Abbr. — 2003-04-10
• Debarkation points: Abbr. — 2003-03-30
• Places by the tracks: Abbr. — 2003-03-23
• Amtrak stops: Abbr. — 1998-11-22
• They're on a sched. — 1997-10-12