| 2026-08-10 | Acorn-bearing tree |
| 2026-07-21 | Acorn producer |
| 2026-05-17 | Cask wood |
| 2026-03-10 | ___ leaf cluster (decoration on a medal) |
| 2026-03-02 | Sturdy bookcase material |
| 2026-01-04 | Acorn, in the future |
| 2025-11-25 | Acorn-producing tree |
| 2025-06-29 | ___ Park, suburb of Chicago |
| 2024-10-28 | Acorn-bearing tree |
| 2024-07-31 | Wood used to age brandy |
| 2024-04-20 | "Mighty" thing |
| 2024-04-10 | Cabinet material |
| 2024-02-17 | Barrel material |
| 2024-01-31 | Common wine barrel material |
| 2024-01-29 | Source of hardwood |
| 2023-12-05 | Hardwood tree |
| 2023-07-23 | – |
| 2023-07-02 | Airport across the bay from SFO |
| 2023-06-20 | Symbol of strength and endurance |
| 2023-05-21 | Cooper's raw material |
| 2023-05-07 | Durable wood |
| 2023-04-16 | Sturdy flooring material |
| 2022-12-17 | Common street name |
| 2022-11-27 | Symbol of sturdiness |
| 2022-07-03 | Popular flooring wood |
| 2022-07-02 | Wine barrel wood |
| 2022-01-13 | Kind of branch depicted on German euro coins |
| 2021-12-09 | Blackjack ___, source of dense wood |
| 2021-12-01 | Barrel wood |
| 2021-10-03 | National tree of the U.S. |
| 2021-09-14 | Good wood for whiskey barrels |
| 2021-08-15 | Symbol on the Connecticut state quarter |
| 2021-07-08 | Symbol of strength |
| 2021-04-05 | Bourbon barrel material |
| 2020-11-25 | Acorn producer |
| 2020-10-15 | Wood rich in tannins |
| 2020-09-23 | Flavor imparter to chardonnay |
| 2020-06-15 | Sturdy tree |
| 2020-05-03 | Symbol of sturdiness |
| 2020-04-29 | Imparter of flavor to cabernet sauvignon wines |
| 2020-02-26 | Squirrel's favorite tree, maybe |
| 2020-01-10 | Tory party symbol |
| 2019-12-16 | Wine barrel wood |
| 2019-11-08 | Flooring selection |
| 2019-09-15 | Symbol of strength |
| 2019-08-07 | "Talking" tree of a Tennyson poem |
| 2019-07-31 | ___ Island (storied site of buried treasure) |
| 2019-04-29 | Sturdy wood |
| 2019-03-14 | Symbol of strength |
| 2018-11-28 | Symbol of durability |
| 2018-06-06 | The ___ Ridge Boys (country/gospel quartet) |
| 2018-04-14 | "Red" or "white" tree |
| 2018-04-08 | Cooper's wood |
| 2018-01-22 | Tree with acorns |
| 2017-10-18 | State tree of Iowa |
| 2017-04-02 | ___ Park, Ill. |
| 2016-06-30 | Royal ___ (Detroit suburb) |
| 2016-06-28 | Sturdy tree |
| 2016-01-17 | Symbol of strength |
| 2015-11-30 | Acorn producer |
| 2015-11-21 | So-called "monarch of the forest" |
| 2015-08-23 | Virginia's ___ Hill Academy, alma mater of 20+ N.B.A. players |
| 2015-04-26 | Wine barrel wood |
| 2015-02-26 | Symbol of strength |
| 2014-12-01 | Tree with lobed leaves |
| 2014-10-05 | TREE |
| 2014-09-11 | Sturdy tree in the beech family |
| 2014-07-30 | Poison ___ |
| 2014-05-01 | Charter ___, symbol on the Connecticut state quarter |
| 2013-12-04 | Symbol of strength |
| 2013-11-21 | Iowa's state tree |
| 2013-11-04 | Tree with acorns |
| 2013-06-03 | Wood for a chest |
| 2013-01-17 | Symbol of might |
| 2012-12-24 | Acorn bearer |
| 2012-08-18 | Rendering on Connecticut's state quarter |
| 2012-05-23 | Barrel material |
| 2012-03-14 | See 14-Across |
| 2012-02-21 | Symbol of sturdiness |
| 2012-01-03 | State tree of Illinois, Iowa and Maryland |
| 2011-11-16 | Symbol of sturdiness |
| 2011-08-14 | Winery wood |
| 2011-07-31 | Composition of many a cask |
| 2011-06-07 | Wood used for wine barrels |
| 2011-04-26 | Acorn source |
| 2011-03-20 | Bookcase material |
| 2010-12-24 | With 67-Across, sacred symbol to Zeus |
| 2010-09-20 | "Mighty" fine home for a squirrel? |
| 2010-09-12 | Flavor associated with Chardonnay |
| 2010-07-07 | Symbol of strength |
| 2010-04-30 | Image on Connecticut's state quarter |
| 2010-01-01 | One of Iowa's state symbols |
| 2009-12-27 | Symbol of strength |
| 2009-11-04 | Tree on a Connecticut state quarter |
| 2009-09-22 | Cask material |
| 2009-08-05 | Oklahoma's ___ Tree National golf course |
| 2007-10-22 | Tree loved by squirrels |
| 2007-10-02 | Yellow ribbon holder, in song |
| 2007-07-22 | The A's, on scoreboards |
| 2007-07-18 | Symbol of sturdiness |
| 2007-06-17 | Flavor tasted in some wine |
| 2007-02-12 | Acorn producer |
| 2007-01-26 | Bourbon flavorer |
| 2006-12-22 | An oenophile might detect a hint of this |
| 2006-01-11 | Furniture wood |
| 2005-10-20 | Hoosier cabinet wood |
| 2005-08-27 | Jerusalem ___ |
| 2004-07-15 | Cask material |
| 2004-07-03 | Sturdy building material |
| 2004-04-15 | Wine cask wood |
| 2004-02-23 | Acorn's source |
| 2004-02-10 | ___ Park, Ill. |
| 2004-02-02 | Acorn maker |
| 2002-11-24 | Symbol of strength |
| 2002-04-08 | Durable wood |
| 2001-10-05 | See 4-Down |
| 2001-04-25 | Symbol of solidity |
| 2001-03-28 | Symbol of might |
| 2001-01-23 | Yellow-ribboned tree |
| 2000-10-05 | Pin ___ |
| 2000-08-08 | Symbol of sturdiness |
| 2000-06-02 | Popular firewood |
| 2000-02-16 | Symbol of might |
| 1999-09-21 | "Red" or "white" tree |
| 1999-09-20 | Iowa's state tree |
| 1999-07-11 | Source of 85-Down |
| 1999-05-18 | House shader |
| 1999-05-02 | Poison ___ |
| 1999-03-07 | Symbol of strength |
| 1999-01-29 | Symbol of strength |
| 1998-07-12 | Ilex, for one |
| 1998-03-30 | Acorn, eventually |
| 1998-03-29 | Sturdy one |
| 1997-12-17 | Kind of finish |
| 1997-11-17 | Acorn tree |
| 1997-10-04 | ___ Hill (James Monroe's home) |
| 1997-08-03 | With 56-Down, city near Knoxville |
| 1997-06-05 | ___-leaf cluster |
| 1997-05-20 | Acorn, in 2020? |
| 1997-04-12 | Pin ___ |
| 1997-03-25 | Sturdy furniture material |
| 1996-11-03 | Source of cork |
| 1995-11-07 | ____ Park, Ill. |
| 1995-10-29 | Pin _____ |
| 1995-06-07 | Cork source |
| 1995-02-07 | Maryland's state tree |
| 1994-12-08 | Might symbol |
| 1994-10-19 | Bucket material |
| 1994-10-07 | _____-leaf cluster |
| 1994-09-04 | Light-colored wood |
| 1994-08-26 | Black or red tree |
| 1994-03-15 | "Tie a Yellow Ribbon" tree |