Historical clue formulations

• Distances in Britain — 2019-06-03
• 96 for Big Ben, heightwise — 2014-08-31
• Distances in Canada — 2008-10-26
• Oxford lengths — 2007-04-08
• Tour de France distances — 2003-09-28
• Concerns for Coleridge — 1999-07-31
• Scotland yards? — 1997-01-05