Some Ducks, Some Pirates, and Some Other Stuff

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Across
  1. 9. These Ducks play at Eugene’s Autzen
  2. 11. Stopping points for runners
  3. 12. Pirates' fans most beloved Pirate
  4. 14. A famous "X" pirate
  5. 15. Original use for rubber ducks
  6. 18. Our only "Model" president
  7. 22. Proper fold shape for Stars & Stripes
  8. 23. Pirate emotional support animal
  9. 24. What the RubberDucks play in The Rubber Capital of the World
  10. 25. Vehicle used for Boston sightseeing tours
  11. 26. Madden’s Raiders raided here
  12. 28. Pirates love them (?)
  13. 30. Hard core features, informally
  14. 31. Some pretty cool stuff
  15. 33. Like some stems and situations
  16. 34. Defeated
  17. 35. Like some waves
  18. 36. Largest signature on Declaration of Independence
  19. 39. Toy with one’s food, perhaps?
  20. 41. Lots of rubber ducks disembarked from this vessel in 1992
  21. 44. Oldest fireworks company in the US
  22. 45. Ducks have a great sense of _____
  23. 47. Children's fowl game
  24. 49. What's on the menu on Coney Island
  25. 50. Sitting ducks
  26. 51. They make bathtime fun
  27. 52. Our "not hairless" national avian
  28. 54. Hits close to home
  29. 55. Pirate hunter turned pirate
  30. 56. Palmated feet
Down
  1. 1. Famous novel that begins on the 4th
  2. 2. English name for pirate flag
  3. 3. Number of times Liberty Bell is rung on the 4th
  4. 4. Crooned about a washed up forty year old pirate
  5. 5. Connecticut's state song
  6. 6. Modern jack sparrow
  7. 7. Piece of pirate gold
  8. 8. Skull and crossbones warn for them
  9. 10. Popular Disney cruise event
  10. 13. Wrap sheets
  11. 16. Champion ship capturer
  12. 17. Yo ho ho and what kind of rum?
  13. 19. Cartoon character introduced in 1934
  14. 20. Male ducks
  15. 21. The call their pirates “Buccaneers” here
  16. 23. State with the oldest brewery
  17. 27. Beverage of choice in Boston Harbor
  18. 29. City that hosted first official Independence Day celebration
  19. 32. Describes a duck's romantic tendencies
  20. 37. Pirates blockaded this SC city in 1718
  21. 38. PeeDee the Pirate hangs here
  22. 40. Edward Teach's nickname
  23. 42. Hideaway church table
  24. 43. US President born on the 4th
  25. 46. NCIS' beloved coroner
  26. 48. Billy the Kidd's cousin?
  27. 53. Considered the "most American" dessert