Historical clue formulations

• Hawkeye — 2026-05-19
• Like Miss Piggy and Captain Kirk, by birth — 2025-10-03
• Des Moines denizen — 2025-07-21
• Sioux City native — 2025-03-11
• Cedar Rapids native — 2023-09-18
• Like Captain James T. Kirk, by birth — 2023-01-08
• Voter in a certain early caucus — 2022-07-12
• Hawkeye — 2022-06-19
• Like some Quad Cities residents — 2022-04-06
• John Wayne, by birth — 2021-12-26
• Certain caucus voter — 2021-07-25
• John Wayne, by birth — 2020-08-30
• Herbert Hoover, by birth (uniquely among all U.S. presidents to date) — 2019-08-28
• Des Moines resident — 2018-07-17
• Any local in "The Music Man" — 2018-06-10
• Hawkeye — 2017-06-22
• Early caucusgoer — 2016-03-28
• Dweller on the upper Mississippi — 2016-02-11
• Hawkeye State native — 2015-04-27
• John Wayne or Johnny Carson, by birth — 2014-11-16
• Des Moines native — 2014-08-04
• Des Moines native — 2013-11-25
• Dweller along the Skunk River — 2010-11-26
• Herbert Hoover, by birth — 2010-08-03
• Hawkeye State native — 2009-12-29
• Cedar Rapids native — 2009-07-13
• Des Moines native — 2008-10-27
• Certain caucuser — 2008-09-07
• Des Moinesian or Davenporter — 2008-07-01
• Des Moines native — 2007-04-23
• Ann Landers was one — 2005-06-19
• Hawkeye — 2002-01-02
• Buffalo Bill, e.g. — 2000-09-01
• Herbert Hoover, for one — 2000-07-15
• Hawkeye — 1999-12-07
• Des Moines native — 1998-03-30
• Davenport denizen — 1998-01-30
• Grant Wood, notably — 1997-05-18
• Herbert Hoover, e.g. — 1996-09-12
• Artist Grant Wood, e.g. — 1994-04-01
• Herbert Hoover, by birth — 1994-02-24
• Dubuque native — 1993-12-20