| 2026-03-30 | Iowa college town |
| 2026-02-18 | Home of the Big 12's Cyclones |
| 2026-01-18 | Midwest city whose name becomes a Southwest city if you move the first letter to the end |
| 2025-07-19 | Iowa State's city |
| 2025-04-06 | Iowa college town |
| 2025-03-26 | Campus site for 30,000+ Iowa students |
| 2024-07-02 | Hometown of the Iowa State Daily |
| 2024-04-23 | Home to Iowa State University |
| 2023-12-25 | City north of Des Moines |
| 2023-11-02 | Hawkeye State college town |
| 2023-04-24 | Iowa college town |
| 2022-12-11 | Midwest college town |
| 2022-07-31 | City north of Des Moines |
| 2022-01-29 | Upper Midwest town with the world's tallest concrete gnome |
| 2022-01-16 | Home of Iowa State |
| 2021-12-27 | Iowa campus town |
| 2021-10-31 | Silicon Valley's ___ Research Center |
| 2021-07-13 | Iowa college town |
| 2021-07-04 | ___ Building, Boston's first skyscraper |
| 2021-07-01 | Midwest center of agricultural research |
| 2020-05-28 | Iowa State city |
| 2020-05-19 | Iowa State's home |
| 2020-05-10 | City north of Des Moines |
| 2020-04-05 | ___ Research Center |
| 2020-03-29 | College town in Iowa |
| 2020-02-02 | Iowa college city that isn't Iowa City |
| 2019-12-22 | College town of George Washington Carver |
| 2019-12-02 | City that's home to Iowa State |
| 2019-11-07 | College city on I-35 |
| 2019-08-22 | NASA's ___ Research Center |
| 2019-07-28 | Big 12 college town |
| 2019-07-16 | Iowa college town |
| 2019-05-18 | NASA's ___ Research Center |
| 2018-08-17 | City north of Des Moines |
| 2018-05-17 | Aldrich who was a spy for the K.G.B. |
| 2018-04-27 | City in the Midwest's Story County |
| 2018-03-22 | Big 12 college town |
| 2018-02-27 | Iowa college town |
| 2018-01-05 | Actor Leon of "The Postman Always Rings Twice" |
| 2017-12-06 | Midwest college town |
| 2017-07-11 | Iowa college town |
| 2017-02-26 | NASA's ___ Research Center |
| 2017-01-06 | Home of a Big 12 school |
| 2016-09-23 | Midwest college town |
| 2016-08-20 | Hawkeye State city |
| 2016-07-19 | College town in Iowa |
| 2016-05-11 | City of central Iowa |
| 2016-01-14 | NASA's ___ Research Center |
| 2015-11-15 | Iowa State locale |
| 2015-10-28 | Spy Aldrich |
| 2015-08-24 | Home to Iowa State |
| 2015-05-24 | Home of the Big 12's Cyclones |
| 2015-05-11 | Iowa college town |
| 2015-03-11 | NASA's ___ Research Center |
| 2015-02-26 | ___ Straw Poll |
| 2014-11-03 | Iowa State's city |
| 2014-06-29 | Traitor Aldrich |
| 2014-02-24 | Iowa State's home |
| 2014-02-16 | NASA's ___ Research Center |
| 2013-12-22 | Iowa city |
| 2013-09-14 | Subject of the 2012 book "Circle of Treason" |
| 2013-01-27 | Double agent Aldrich |
| 2012-07-18 | Traitorous Aldrich |
| 2012-05-17 | ___ Straw Poll |
| 2011-03-31 | Midwest college town |
| 2011-02-18 | ___ Research Center (NASA lab in Silicon Valley) |
| 2010-12-25 | City north of Des Moines |
| 2010-12-03 | Home of a Big 12 school |
| 2010-11-21 | Presidential straw poll city |
| 2010-08-18 | Ed with the 1967 hit "My Cup Runneth Over" |
| 2010-08-07 | Columnist and graphic novelist Jonathan |
| 2010-06-01 | Spy Aldrich |
| 2010-04-25 | NASA's ___ Research Center |
| 2009-11-11 | Iowa home of the Cyclones |
| 2009-05-15 | C.I.A. betrayer arrested in 1994 |
| 2009-04-23 | Where the Iowa Straw Poll is done |
| 2009-04-20 | Home of Iowa State University |
| 2008-11-04 | Iowa college town |
| 2008-09-07 | Home of 14-Down |
| 2008-08-25 | Ed with the 1967 hit "My Cup Runneth Over" |
| 2008-08-21 | ___ Building, first skyscraper in Boston |
| 2008-05-06 | University town near Des Moines |
| 2008-03-12 | C.I.A. betrayer Aldrich |
| 2008-01-21 | Actor Ed of "Daniel Boone" |
| 2007-08-30 | Bob ___, young man in Dreiser's "Sister Carrie" |
| 2007-06-05 | Skunk River city |
| 2007-03-11 | NASA's ___ Research Center |
| 2007-03-05 | ___ Brothers, who sang "Rag Mop" |
| 2006-12-05 | Iowa State's town |
| 2006-03-04 | Rachel of "General Hospital" |
| 2006-02-21 | Traitor Aldrich ___ |
| 2005-08-30 | Iowa college town |
| 2005-08-28 | Actor Leon of "Life With Father" |
| 2005-08-07 | Singing brothers' name |
| 2005-05-27 | NASA's ___ Research Center |
| 2005-05-08 | Iowa State's home |
| 2004-11-08 | Iowa State's home |
| 2004-10-26 | Iowa State city |
| 2004-08-22 | Skunk River city |
| 2004-08-18 | Double agent Aldrich |
| 2004-07-18 | Treasonous Aldrich |
| 2004-01-28 | Skunk River city |
| 2004-01-11 | "Daniel Boone" actor |
| 2003-05-18 | Infamous Aldrich |
| 2003-04-08 | Home of Iowa State |
| 2003-01-26 | NASA's ___ Research Center |
| 2002-12-25 | NASA's ___ Research Center |
| 2002-11-11 | Ed who sang "My Cup Runneth Over" |
| 2002-11-05 | Traitorous Aldrich |
| 2002-07-16 | Ed of "Daniel Boone" |
| 2002-07-13 | Harry of the novel "The Man Who Cried I Am" |
| 2002-07-06 | City on the Skunk River |
| 2002-05-14 | Home of Iowa State |
| 2002-05-11 | Colonial almanac compiler Nathaniel |
| 2002-03-17 | Iowa State site |
| 2002-02-02 | Cathy ___, "East of Eden" wife |
| 2001-06-21 | Home of Iowa State |
| 2001-05-16 | Home of Iowa State |
| 2001-03-21 | With 61-Down, a Big 12 campus city |
| 2000-12-27 | Singing family name |
| 2000-10-24 | "Rag Mop" singers the ___ Brothers |
| 2000-07-19 | Spy Aldrich |
| 2000-05-24 | Iowa State site |
| 2000-03-09 | Leon of "Mister Ed" |
| 2000-01-30 | Big Twelve Conference city |
| 1999-10-25 | Spy Aldrich |
| 1999-10-15 | City southeast of Fort Dodge |
| 1999-10-01 | City on the Skunk |
| 1999-09-27 | Home of Iowa State |
| 1999-08-06 | Skunk River city |
| 1999-05-25 | Spy Aldrich ___ |
| 1998-12-09 | City half an hour north of Des Moines |
| 1998-11-17 | Site of Iowa State |
| 1998-09-24 | University town west of Cedar Rapids |
| 1998-07-05 | Home of the Cyclones |
| 1998-07-01 | Home of Iowa State |
| 1998-06-25 | Cathy ___, "East of Eden" wife |
| 1998-02-09 | ___ Brothers of 40's-50's music |
| 1998-01-04 | Home of the Cyclones |
| 1997-12-29 | Iowa State University site |
| 1997-10-23 | Cathy of "East of Eden" |
| 1997-09-28 | Early American orator Fisher ___ |
| 1997-09-12 | Home of the N.C.A.A.'s Cyclones |
| 1997-07-11 | City on the Skunk |
| 1997-04-13 | Reformer Jessie |
| 1997-02-27 | Spy in 1994 headlines |
| 1996-12-08 | Brothers' name of 40's-50's music |
| 1996-11-14 | City on the Skunk River |
| 1996-10-20 | Spy in '94 headlines |
| 1996-09-10 | Iowa State's locale |
| 1996-07-24 | Traitor Aldrich |
| 1996-07-16 | "My Cup Renneth Over" singer |
| 1996-07-09 | The___Brothers (40's-50's group) |
| 1996-04-22 | Iowa college town |
| 1996-04-15 | Iowa college town |
| 1996-03-21 | Ed of Mingo fame |
| 1996-02-15 | Midwest university town |
| 1996-02-13 | City north of Des Moines |
| 1995-11-06 | Iowa city |
| 1995-09-29 | Infamous name in spying |
| 1995-07-31 | Ed of "Daniel Boone" |
| 1995-07-03 | ____ Brothers ("Rag Mop" quartet) |
| 1995-05-06 | Brothers of song |
| 1995-04-27 | End of Stepquote |
| 1995-03-24 | Iowa State's home |
| 1995-03-15 | Singer Ed |
| 1995-02-28 | Home of Iowa State |
| 1995-01-27 | City on the Skunk River |
| 1994-12-21 | Iowa university town |
| 1994-12-03 | Old-time actor Leon |
| 1994-08-15 | "Rag Mop" brothers |
| 1994-06-19 | City north of Des Moines |
| 1994-04-05 | Mingo portrayer |
| 1994-03-08 | Ed of "Daniel Boone" |