Historical clue formulations

• Ear-related prefix — 2025-10-19
• Medical lead-in to -scope — 2025-08-23
• Indigenous Oklahoman — 2024-08-11
• Prefix with -plasty — 2023-07-29
• Language in which "Nebraska" means "flat river" — 2023-05-03
• Platte River people — 2023-02-01
• Plains tribe — 2023-01-22
• Siouan language speaker — 2022-04-11
• Ear-related prefix — 2021-08-20
• Ear: Prefix — 2021-03-07
• Prefix with laryngology — 2020-06-02
• Speaker of a Siouan language — 2019-08-27
• Palindromic tribe — 2018-09-23
• Native Oklahoman — 2018-06-03
• Plains tribe name — 2017-01-24
• Fox neighbor — 2015-12-05
• Plains folk — 2015-11-21
• Plains Indian — 2015-07-05
• Midwest tribe — 2015-05-10
• Great Plains native — 2015-04-18
• Native Nebraskan — 2015-03-03
• Chief Chono Ca Pe, e.g. — 2014-09-06
• Ear-related prefix — 2014-05-14
• Ear-related prefix — 2014-03-05
• Tribe of Chief Shaumonekusse — 2014-01-31
• Fox tribe neighbor — 2014-01-17
• Siouan speaker — 2013-07-07
• Plains tribe — 2012-06-04
• Oklahoma Indian — 2012-05-06
• Hearing opening? — 2011-12-30
• Ear: Prefix — 2011-11-30
• Native Nebraskan — 2011-10-26
• Ear-related prefix — 2011-10-25
• Relatives of the Iowa — 2011-09-17
• Plains tribe — 2011-05-23
• Ear: Prefix — 2011-03-13
• Plains Indian — 2010-12-06
• Chiwere-speaking tribe — 2010-11-25
• Plains folk — 2010-03-05
• Iowa relative — 2010-02-13
• Plains tribe — 2009-12-28
• Chiwere speaker — 2009-11-20
• Oklahoma Indian — 2009-08-11
• Ear: Prefix — 2009-06-11
• Chiwere dialect — 2009-03-13
• Ear: Prefix — 2008-09-16
• Plains native — 2008-08-30
• Nebraska native — 2008-08-26
• Great Plains tribe — 2008-07-31
• Oklahoma Indian — 2008-06-10