Across

1. Sandbar

6. Takes the bull by the horns

10. Portent

14. First in a series

15. Fingerboard ridge

16. Hemingway, for one

17. Profit

18. Memorization by repetition

19. Canyonlands locale

20. Home cook’s low-cal staple?

23. System starter?

24. It often comes to a stop

25. A guy on the green

26. Landmark Supreme Court name

29. Home cook’s salad choice?

33. Albanian coin

34. Join forces, in a way

35. Chihuahua snack

36. Revise

39. Word with cap or coat

40. Country on the Irish Sea

41. TV’s Roseanne

42. Honorarium

43. Tropical garland

44. Home cook’s entree?

48. Title in India

49. Ward workers

50. Peachy keen

51. Historical period

54. Home cook’s breakfast enhancement brand?

58. School visitor of rhyme

60. White wader

61. Aspirin targets

62. Jim Davis mutt

63. German actress Sommer

64. Tune for the unhip

65. Candlelike

66. Core element?

67. New drivers, often

Down

1. Sci-fi setting

2. Ruinous damage

3. Elocutionist

4. Quarreling

5. Sadie Hawkins Day originator

6. From the top

7. Gator cousin

8. On a short leash9. Braced (oneself)

10. Numbered piece

11. Kind of witness

12. Fed. regulator since 1970

13. “Ixnay”

21. Thick, messy stuff

22. Double switchback

27. Without repetition

28. Things that may become bruised

30. Trouble indicator

31. Nerdish guy

32. Prepare a slide

36. How-to stuff

37. Co-star of a 1939 classic

38. Backpacker’s fare

39. Fit for repeated service

40. Achilles’ heel

42. Likes

43. Role for 37-Down

45. Work or energy unit

46. Upped the ante

47. Make fun of

52. Argument

53. Nave endings

55. Mind

56. Armstrong transport

57. Common ground for Bush and Kerry

58. Contemptible

59. Decay-fighting org.