| 2024-01-12 | 2, for He: Abbr. |
| 2020-11-10 | ___ time (never) |
| 2020-03-08 | ___ expense (free) |
| 2018-05-27 | Scandium's is 21: Abbr. |
| 2018-04-25 | Periodic table fig. |
| 2017-10-10 | What "This" refers to, in this puzzle's theme: Abbr. |
| 2017-05-27 | Md or Rn fig. |
| 2016-02-16 | 1 for hydrogen or 2 for helium: Abbr. |
| 2015-07-23 | 42, for Mo |
| 2015-05-17 | "... ___ extra charge!" |
| 2014-08-26 | ___ extra cost |
| 2014-08-06 | 53 for I, e.g. |
| 2014-04-07 | "... ___ cost to you!" |
| 2014-03-29 | O's is one more than N's |
| 2014-01-26 | He's 2, for one |
| 2014-01-03 | It's 8 for O |
| 2013-12-28 | Fig. for I, O or U, but not A or E |
| 2013-10-11 | Stat. for Re, La or Ti |
| 2013-09-18 | 47, for Ag |
| 2013-07-31 | Periodic table fig. |
| 2013-07-13 | W's is 74 |
| 2013-03-25 | ___ time (never) |
| 2013-01-19 | Figure on a table: Abbr. |
| 2012-03-26 | Zinc's is 30: Abbr. |
| 2012-03-07 | Periodic table info: Abbr. |
| 2012-01-21 | He's 2, say |
| 2011-08-13 | Am or Fm stat |
| 2011-07-07 | 6, for C |
| 2011-03-20 | ___ time (never) |
| 2010-11-16 | "___ extra cost!" |
| 2010-02-21 | Periodic table fig. |
| 2010-01-26 | ___ extra cost |
| 2009-03-13 | 8 for O, say |
| 2009-02-01 | 5 for B or 6 for C |
| 2008-09-18 | 80, for Hg |
| 2008-05-31 | It's 8 for O |
| 2007-12-09 | 13, for Al |
| 2007-09-04 | 79, for gold: Abbr. |
| 2007-04-25 | ___ extra cost |
| 2007-04-07 | 95 for Am or 100 for Fm: Abbr. |
| 2007-04-04 | Au's is 79 |
| 2007-02-18 | "___ cost to you!" |
| 2007-02-11 | 14 for Si or 102 for No: Abbr. |
| 2006-07-24 | ___ extra cost |
| 2006-06-27 | Periodic table fig. |
| 2006-06-08 | Fig. on a periodic table |
| 2006-04-30 | "___ cost to you" |
| 2005-12-18 | 27 for 56-Across, e.g.: Abbr. |
| 2005-11-19 | Chem. datum |
| 2005-05-12 | 79 for gold, e.g.: Abbr. |
| 2005-03-14 | "___ additional cost!" |
| 2005-01-20 | 79 for gold, e.g.: Abbr. |
| 2005-01-16 | Periodic table stat. |
| 2005-01-05 | "___ extra cost!" |
| 2004-07-20 | "___ extra cost!" |
| 2004-06-20 | Gold's is 79: Abbr. |
| 2004-01-25 | ___ point (never) |
| 2003-12-29 | ___ cost (free) |
| 2003-06-21 | 13, for Al |
| 2003-03-05 | It's 5 for B and 6 for C: Abbr. |
| 2002-05-21 | ___ time (never) |
| 2001-11-08 | ___ time |
| 2001-10-21 | ___ time |
| 2001-10-11 | With 48-Across, never |
| 2001-09-05 | Au's is 79 |
| 2001-06-05 | 29 for copper, e.g.: Abbr. |
| 2001-03-28 | O's is 8 |
| 2001-02-18 | "___ charge!" |
| 1999-09-26 | 26 for Fe: Abbr. |
| 1999-07-28 | "___ extra cost" |
| 1999-01-31 | ___ point (never) |
| 1998-12-09 | ___ extra cost |
| 1998-08-14 | ___ extra cost |
| 1998-07-28 | 79 for gold, e.g.: Abbr. |
| 1998-07-03 | ___ cost |
| 1997-10-01 | ___ time (never) |
| 1997-08-24 | "___ cost to you!" |
| 1997-06-23 | ___ time (never) |
| 1997-05-26 | "___ cost to you!" |
| 1997-02-12 | 1 for H, or 2 for He |
| 1996-12-09 | "___ added expense" |
| 1996-08-26 | ___ time (never) |
| 1996-08-20 | ___ time (never) |
| 1996-06-28 | ___expense |
| 1996-06-05 | ___cost (free) |
| 1996-05-19 | ___time |
| 1995-07-17 | ____ time (never) |
| 1995-05-08 | _____ time (never) |
| 1995-02-05 | Words before time or expense |
| 1995-01-15 | _____ time (never) |
| 1994-03-14 | _____ time (never) |