Across

1. Has to

5. Off one’s trolley

9. Card player’s headwear, perhaps

14. 0 on a phone

15. Lake in four states

16. Foreword, e.g.

17. Kiev resident

19. Insertion mark

20. Escort to the living room, say

21. Env. abbreviation

23. Enticing sign word

24. Medicinal herbs

26. Egypt’s Mubarak

28. Three-sided sword

29. “Bad Moon Rising’’ band, briefly

32. 1936 and 1937 Best Actress Luise

35. Daylong marches

38. In ___ (unborn)

39. Hardly old-fashioned

42. Bopped on the noggin

44. One end of the spectrum

45. Television announcer Don

47. Inactiveness

49. Rice and wheat, e.g.

51. Relaxing resort

52. Charter

56. Get slick, in a way

58. Meteorologist’s line

60. Jonathan Larson’s musical

62. Place for a crow’s-nest

65. “All that I am I ___ thee’’ (Psalms)

66. TV studio sign

68. With 48-down, theme of this puzzle

70. Start an Internet session

71. Scale deduction

72. Scrambler, e.g.

73. Likhovtseva of women’s tennis

74. Kitty starter

75. Doesn’t hold up well?

Down

1. Chilled dessert

2. Household expenses

3. Unflappable

4. Instructor’s charge

5. Bear lair

6. Solo for Renata Scotto

7. Auto that debuted in 1899

8. Certain decimal fraction

9. Singer Damone

10. Visibly peeved

11. Chef’s gadget

12. Southern Russian city

13. Boring way to learn, to some

18. Words with pickle or minute

22. Negative joiner

25. Battle memento

27. Nejd native

30. Capital examiners, briefly

31. Land-related portfolio items

33. Prior to, poetically

34. Towel site

36. Steakhouse order, perhaps

37. Succumb to stress

39. Automobile sticker fig.

40. Trireme tool

41. Kind of ditch

43. Morales of “La Bamba’’

46. Articulation

48. See 68-across

50. Object to find in Kakuro

53. Land on the Bay of Biscay

54. OK for the rugrats

55. Chips away at

57. An Italian cuisine

59. Tippler

60. Thing to play

61. Hydroxyl compound

63. Observatory function

64. Fruity pastry

67. Some strands in a cell

69. Something to drive off