Historical clue formulations

• Plains people — 2023-09-27
• Canadian natives — 2013-03-17
• Ontario natives — 2012-03-08
• First Nations group — 2011-05-15
• Montana Indians — 2009-05-31
• Tribe with a sun dance — 2007-05-06
• First Nations tribe — 2003-09-20
• Ontario natives — 2002-09-13
• Some Algonquians — 2000-06-04
• Blackfoot foes — 2000-05-06
• Canadian Indians — 1999-09-21
• Northern Indians — 1994-04-25
• Manitoba Indians — 1994-02-04