| 2017-10-19 | Range units: Abbr. |
| 2017-10-03 | Whitney and Shasta, for two: Abbr. |
| 2014-10-01 | Appalachians, e.g.: Abbr. |
| 2014-03-28 | Range parts: Abbr. |
| 2013-10-02 | Cascades, e.g.: Abbr. |
| 2011-11-09 | Himalayas, e.g.: Abbr. |
| 2011-09-29 | Range parts: Abbr. |
| 2011-07-27 | The Dolomites, e.g.: Abbr. |
| 2011-06-09 | Chain "links": Abbr. |
| 2011-04-14 | Where chamois and snow leopards live: Abbr. |
| 2009-07-28 | Range units: Abbr. |
| 2009-02-04 | Rockies, e.g.: Abbr. |
| 2009-01-23 | Chain links?: Abbr. |
| 2007-01-07 | Much of Colo. |
| 2006-09-17 | Range: Abbr. |
| 2006-02-18 | People may take a pass on them: Abbr. |
| 2004-10-28 | Tenn.'s Cumberland ___ |
| 2004-07-23 | Range: Abbr. |
| 2003-11-26 | Range units: Abbr. |
| 2003-04-13 | Calif.'s Sierra Nevadas, e.g. |
| 2003-01-16 | Atlases, e.g.: Abbr. |
| 2000-04-17 | Range: Abbr. |
| 1999-03-06 | Range: Abbr. |