Possible Clues:

• Mighty beeches
• Druids' sacred trees
• Acorns, after time
• Dumbarton ___ Conference (1944 meeting that laid the groundwork for the U.N.)
• Squirrels' homes
• Sources of some barrels
• Many trees
• State trees of six U.S. states
• Mighty ones from little acorns grow
• Trees that symbolize might