| Date | Grid | Clue | Author |
|---|---|---|---|
| Tuesday, July 31, 2012 | 53A | Runner Sebastian (12) | Michael Sharp |
| Sunday, January 29, 2012 | 103A | Country singer David Allan ___, writer of "Take This Job and Shove It" | Ian Livengood |
| Monday, January 16, 2012 | 66D | Iowa college (12) | Andrea Carla Michaels |
| Tuesday, November 15, 2011 | 21D | Country music's David Allan ___ (2) | Gareth Bain |
| Tuesday, October 11, 2011 | 38A | Miler Sebastian (10) | Ed Sessa |
| Monday, September 12, 2011 | 61D | Iowa college (12) | Keith Talon |
| Sunday, September 11, 2011 | 123D | Iowa college (12) | Kay Anderson |
| Tuesday, September 21, 2010 | 65D | Runner Sebastian (12) | Adam G. Perl |
| Tuesday, November 18, 2008 | 62D | Iowa college (12) | Richard Chisholm |
| Sunday, November 16, 2008 | 83D | Runner Sebastian (12) | Merl Reagle |
| Sunday, August 24, 2008 | 86D | Iowa college (12) | Kevin G. Der |
| Sunday, July 20, 2008 | 42D | Iowa college (12) | Barry C. Silk |
| Tuesday, November 6, 2007 | 22A | Cedar Rapids college (9) | John Underwood |
| Monday, August 6, 2007 | 3D | Cedar Rapids college (9) | Allan E. Parrish |
| Wednesday, August 1, 2007 | 61D | Cedar Rapids college (9) | David J. Kahn |
| Monday, February 12, 2007 | 21A | Record-setting miler Sebastian | Lynn Lempel |
| Tuesday, January 9, 2007 | 35A | Runner Sebastian (12) | Ed Early |
| Thursday, January 4, 2007 | 41D | Iowa college (12) | Alan Olschwang |
| Sunday, October 8, 2006 | 104A | Iowa college (12) | Fred Piscop |
| Monday, September 11, 2006 | 54A | Olympic gold-medal runner Sebastian | Lynn Lempel |
| Saturday, March 11, 2006 | 33D | Iowa college since 1851 | David Quarfoot |
| Wednesday, May 4, 2005 | 29D | Miler Sebastian (10) | Victor Fleming |
| Wednesday, March 23, 2005 | 3D | Runner Sebastian (12) | Mike Shenk |
| Tuesday, January 11, 2005 | 64A | Runner Sebastian (12) | Sarah Keller |
| Tuesday, November 16, 2004 | 38D | Iowa college (12) | Stella Daily and Bruce Venzke |
| Tuesday, October 5, 2004 | 63D | Sebastian who once ran the world's fastest mile | James R. Leeds |
| Sunday, September 26, 2004 | 69A | College in Cedar Rapids | Joe DiPietro |
| Sunday, December 8, 2002 | 34D | Iowa college (12) | Peter Gordon |
| Tuesday, January 8, 2002 | 2D | British runner Sebastian | Janet R. Bender |
| Friday, December 21, 2001 | 45D | Cedar Rapids college (9) | William I. Johnston |
| Monday, October 1, 2001 | 49D | Miler Sebastian (10) | Janice M. Putney |
| Tuesday, March 20, 2001 | 46D | Miler Sebastian (10) | Peter Abide |
| Monday, February 5, 2001 | 28A | Miler Sebastian (10) | Nancy Salomon and Harvey Estes |
| Friday, November 10, 2000 | 4D | Country music's David Allan ___ (2) | Bob Klahn |
| Friday, November 3, 2000 | 26A | Runner Sebastian (12) | Joe DiPietro |
| Thursday, October 12, 2000 | 63D | Iowa school | A. J. Santora |
| Thursday, March 30, 2000 | 61D | Cedar Rapids college (9) | Randolph Ross |
| Wednesday, September 8, 1999 | 6D | Runner Sebastian (12) | Holden Baker |
| Thursday, July 1, 1999 | 63D | Miler Sebastian (10) | Alan Arbesfeld |
| Sunday, June 27, 1999 | 103A | Renowned British runner | Robert Malinow |
| Monday, May 24, 1999 | 47A | Cedar Rapids college (9) | Gregory E. Paul |
| Sunday, March 28, 1999 | 122D | Country singer David Allan ___ | Cathy Millhauser |
| Saturday, March 6, 1999 | 20A | Miler Sebastian (10) | Fred Piscop |
| Saturday, February 13, 1999 | 57D | Iowa college (12) | David J. Kahn |
| Sunday, August 30, 1998 | 32A | Former mile record-holder | John Wolting |
| Saturday, July 25, 1998 | 46D | Cedar Rapids college (9) | Robert H. Wolfe |
| Sunday, July 5, 1998 | 109D | Runner Sebastian (12) | Joe DiPietro |
| Wednesday, November 6, 1996 | 57A | Miler Sebastian (10) | M. E. Skolsky |
| Thursday, August 15, 1996 | 43D | Former mile record holder | S. B. Whitten |
| Thursday, May 2, 1996 | 37D | 70's-80's British track star | D. J. Kahn |
| Monday, March 25, 1996 | 49A | Runner Sebastian (12) | F. & L. Sabin |
| Friday, March 15, 1996 | 32D | TV producer Fred | A. J. Santora |
| Sunday, October 8, 1995 | 63D | Iowa college (12) | Nancy Nicholson Joline |
| Monday, July 31, 1995 | 53A | Miler Sebastian (10) | Elizabeth Gorski |
| Thursday, June 22, 1995 | 4D | Runner Sebastian (12) | Cathy Millhauser |
| Saturday, February 11, 1995 | 36A | Cedar Rapids college (9) | Randolph Ross |
| Monday, January 16, 1995 | 42D | Miler Sebastian (10) | Walter Covell |
| Friday, December 30, 1994 | 19A | Cedar Rapids college (9) | Wayne Robert Williams |
| Sunday, April 24, 1994 | 63A | Ovett track rival | Louis Sabin |
| Monday, February 28, 1994 | 39A | Runner Sebastian (12) | Sidney L. Robbins |
1 result for COE from Variety puzzles.
| Date | Type | Grid | Clue | Author |
|---|---|---|---|---|
| December 9, 2001 | diagramless | 53D | Miler Sebastian | Peter Gordon |
23 results for COE from older pre-Shortz puzzles.
| Date | Grid | Clue | Author | Editor |
|---|---|---|---|---|
| Friday, September 25, 1992 | 1A | Miler Sebastian ___ | Jeanette K. Brill | Maleska |
| Saturday, July 27, 1991 | 56D | College in Cedar Rapids | A. J. Santora | Maleska |
| Friday, July 26, 1991 | 10D | Producer-director Fred ___ | Page | Maleska |
| Friday, July 19, 1991 | 34D | Runner Sebastian | Martin Ashwood-Smith | Maleska |
| Monday, June 17, 1991 | 34D | Famed miler | Eugene T. Maleska | Maleska |
| Monday, March 11, 1991 | 28D | Famed British miler | Frank Miceli | Maleska |
| Tuesday, October 30, 1990 | 44D | Cedar Rapids university | Richard Silvestri | Maleska |
| Wednesday, May 16, 1990 | 30D | Runner Sebastian | Don Groat | Maleska |
| Wednesday, January 24, 1990 | 32D | Cedar Rapids college | Richard Silvestri | Maleska |
| Sunday, May 8, 1988 | 9D | "Producer's Showcase" producer | Bette Sue Cohen | Maleska |
| Saturday, April 23, 1988 | 59D | An Iowa college | Betty Hinman | Maleska |
| Thursday, December 10, 1987 | 27A | Miler Sebastian | Charlotte Shore | Maleska |
| Friday, October 31, 1986 | 62D | Runner Sebastian | Joy L. Wouk | Maleska |
| Monday, June 23, 1986 | 58D | British miler Sebastian | Nancy McCarthy | Maleska |
| Saturday, February 22, 1986 | 35D | Miler Sebastian | Kenneth Witte | Maleska |
| Monday, December 30, 1985 | 60D | Cedar Rapids institution | Sidney L. Robbins | Maleska |
| Wednesday, December 25, 1985 | 49A | Runner Sebastian | Joy L. Wouk | Maleska |
| Wednesday, September 26, 1984 | 45D | Miler Sebastian ___ | Colebury | Maleska |
| Saturday, June 9, 1984 | 51A | Iowa college | Rhonda Kraus | Maleska |
| Monday, August 29, 1983 | 37A | Sebastian of track fame | Young | Maleska |
| Friday, August 26, 1983 | 1D | Iowa college | I. Judah Koolyk | Maleska |
| Monday, June 20, 1983 | 8D | Miler Sebastian ___ | Nancy McCarthy | Maleska |
| Saturday, April 2, 1983 | 56D | Great miler | Robert Katz | Maleska |