AK 5/MI 3/FL 3

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Across
  1. 2. Where earth meets sky
  2. 7. River-mouth formation
  3. 8. Words to live by
  4. 11. Seasonal scenery
  5. 12. Piece of the past
  6. 13. October baseball
  7. 15. Nighttime illumination
  8. 17. Source of inspiration
  9. 21. Curved shape in the sky
  10. 22. Field stand-in
Down
  1. 1. An unusual trait
  2. 3. Trip around the sun
  3. 4. Forest's leafy ceiling
  4. 5. Hint of winter
  5. 6. Fire's fading glow
  6. 9. Between daylight and dark
  7. 10. Insider vocabulary
  8. 11. A prehistoric find
  9. 14. Another name
  10. 15. Planet or element
  11. 16. Fall school tradition
  12. 18. Feeling without proof
  13. 19. Clever trick
  14. 20. A gentle gust