Historical clue formulations

• Crazy Horse's people — 2026-01-05
• Standing Rock tribe — 2018-06-10
• One signatory to the Treaty of Fort Laramie — 2018-05-04
• Little Bighorn victors — 2015-07-21
• Wounded Knee tribe — 2014-06-18
• Red Cloud, e.g. — 2013-08-30
• Another ally of the Cheyenne — 2009-10-11
• Sitting Bull or Crazy Horse — 2008-12-08
• North Dakota Fighting ___ — 2008-10-04
• Victors at Little Bighorn — 2007-11-28
• Dakota Indians — 2006-10-26
• Language of the Omahas — 2004-11-01
• Little Bighorn fighters — 2004-05-28
• Red Wing, for one — 2001-10-19
• Language from which "Minnesota" comes — 2000-01-15
• Red Cloud, for one — 1999-12-24
• Sitting Bull or Crazy Horse — 1999-12-05