Historical clue formulations

• City whose name is Siouan for "good place to dig potatoes" — 2022-05-19
• Capital that ends with its state's first two letters — 2022-02-09
• Capital of Kansas — 2020-09-01
• City along the old Oregon Trail — 2018-08-18
• Brown v. Board of Education city — 2018-06-10
• 19th-century Midwest rail hub — 2015-08-12
• Kansas city — 2015-08-11
• Brown v. Board of Education city — 2014-12-30
• Midwest capital — 2014-01-05
• Big kahunas — 2013-08-25
• Sunflower State capital — 2013-04-21
• Seat of Shawnee County — 2008-11-01
• City whose name is Siouan for "a good place to grow potatoes" — 2008-04-19
• Seat of Shawnee County — 2008-03-29
• Brown v. Board of Education city — 2006-08-18
• City in a classic railroad name — 2005-07-13
• Brown v. Board of Education city — 2001-11-11
• State capital about 60 miles from Manhattan — 2001-09-28