Happy Father's Day

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Across
  1. 3. Matthew, Ronnie, Jeff, Andrew...
  2. 6. Observer
  3. 8. Casey's age in 2031
  4. 13. Black and white treat
  5. 16. One of Nick Wiger's instruments
  6. 17. Bumpy
  7. 19. Once young
  8. 20. Hard task (with 50 across)
  9. 22. Estimated time of __
  10. 24. Unfamiliar
  11. 25. See 49 across
  12. 26. Nut
  13. 28. Small tennis tournaments
  14. 29. Repeater
  15. 31. City in ancient Mesopotamia
  16. 34. Ender
  17. 35. Reach out
  18. 36. Pantomime
  19. 38. She/__
  20. 40. Wood's world
  21. 43. Framework
  22. 48. __ Capote
  23. 49. Genesis kids (with 25 across)
  24. 50. See 20 across
  25. 52. See 44 down
  26. 54. Stars ___ bright above you
  27. 55. Big sand pile
  28. 56. EMTs vehicle
  29. 57. Best in the biz (with 59 across)
  30. 59. See 57 across
  31. 60. Auxiliary
  32. 65. Scammers
  33. 66. Lower is better for a pitcher
  34. 67. Left
  35. 70. Guns, knives, eg
  36. 71. Cyclones
Down
  1. 1. Lion, tiger, leapord, eg
  2. 2. Beginning
  3. 4. Doctrine
  4. 5. Amid the stars
  5. 7. Emphasize
  6. 9. Writer of In Cold Blood
  7. 10. Doughboys Double month of May theme
  8. 11. Cutesy name for a toe
  9. 12. See 59 down
  10. 14. See 47 down
  11. 15. White house, in malaga
  12. 18. Sam's friend
  13. 21. Matthew to Liza
  14. 23. North Dakotan city
  15. 24. Pilot
  16. 27. Slot machine home
  17. 28. Private meeting
  18. 30. Casey's red friend
  19. 32. __ of life
  20. 33. Principle
  21. 37. Profile picture
  22. 39. Freeloader
  23. 41. Blunt
  24. 42. Five golden ___
  25. 43. Souvenir
  26. 44. Uber operator of yore (with 52 across)
  27. 45. Colin Farrell, eg
  28. 46. "Nuh uh"
  29. 47. Small ladies (with 14 down)
  30. 51. Not upright but
  31. 53. Foreigner
  32. 58. Winners of Superbowl III
  33. 59. Fine gents (with 12 down)
  34. 61. "Oh, brother"
  35. 62. Havina's line
  36. 63. Passion
  37. 64. Jason Mendoza's fav team
  38. 68. Black goo
  39. 69. Pace
  40. 72. __ fly or ___ bunt