Across 1. Preen 6. Telly content provider 10. Russian river or mountain region 14. Kidney-related 15. Simple plant 16. Interesting spots in an ellipsoidal whispering chamber 17. (0, 0), if y = x(x+2)(x-2) 20. Bread 21. Magnitude 22. CSA general 23. Patriot missile or Adams 25. Blue 26. Said of a function whose difference quotient has a limit 34. Teased hairstyle 35. Large part of DHS 36. Bochco TV show, 1986-94 38. Sky blue 39. Approaching broke 42. Slake 43. Accord maker 45. ___ Tse-Tung 46. Irritated state 47. Some antidifferentiation techniques 51. Recipient of his affection? 52. Jackie’s hubby 53. Fingers 56. Corporations dig them 58. Build retaining wall for 63. dy/dx = xy, e.g. 66. Director David 67. ___ pudding 68. Green

69. Television award 70. Adjusts trouser legs 71. ___ community Down 1. Prudish 2. Ashcroft predecessor 3. The skinny 4. Washington attraction 5. If you ___ 6. DiMaggio’s tool 7. Yale folk 8. Believer in self-interest 9. Buckaroo ___ (Weller role) 10. ET vehicle 11. Stir up 12. Teen bane 13. Brew brand 18. Sheet music on a gig 19. Foot control 24. Set of x values for a Riemann sum 26. Roof (Ger.) 27. “___ Knew Susie Like . . .” 28. Kafkaesque first name (alt.) 29. Cheesy treat (alt.) 30. Ruth’s mother-in-law 31. Lowest voices 32. Argentine plain 33. Order carryout, e.g. 37. Moistens 40. Pro ___ 41. Circumnavigated 44. Detest 48. Six-winged angel 49. High voice 50. Comedian’s forte 53. End of Gilligan’s theme 54. Adjudge 55. Most e-mail 57. Many an affordable neighborhood 59. Painter’s first deg., perhaps 60. “There is no grievance that is ___ object of redress by mob law.” (A. Lincoln) 61. Actress Campbell 62. PBS station in San Francisco, named for the end to a mathematical proof 64. ___ and all 65. Long dashes