1: Center-to-quarterback transitions

6: Parcel of land

10: Ness, for one

14: Unspoken

15: Time past

16: In a competent way

17: Soft palate part

18: Niagara Falls sound

19: Tide type

20: This puzzle's theme

22: Unit of force

23: Kosher meal

24: They get into sushi

26: The Amish, the Shakers, et al.

29: Series beginning

33: Perth pal

37: Block passage through

38: Pasta or staircase shape

39: Figurine mineral

40: Undemocratic law

42: Force

43: Tasty mushrooms

45: Varlet

46: They're beaten in the kitchen

47: Dagwood's 'SKNXX-X'

48: Obsolete VCRs

50: 'I'm history!'

52: Personal strength

56: Places

59: Yankee who sympathized with the South during the Civil War

63: Word of woe

64: K or G

65: Wild dog

66: Spork part

67: Charged particles

68: Map legend, usually

69: Thin-bladed tools

70: Snack

71: Industrious group

1: Many a retired thoroughbred

2: Church halls

3: Intense

4: Made a heap

5: Unwelcome looks

6: Fiery stack

7: Bird with an eerie call

8: Gives a speech

9: By no means long-winded

10: Overwhelming victory

11: Listen to

12: Extended family

13: Ballyhoo

21: Loon's look-alikes

25: Full circle, on the track

27: Lowlife

28: Brief instant

30: Fuddy-duddy

31: Keep in suspense

32: Hgts.

33: May honorees

34: In the near future

35: Rookie

36: Flashcards, for example

38: Attack from the air

41: Slice

44: Welcoming gift on Maui

48: Weep noisily

49: Like some details

51: Be a cast member of

53: Prefix with virus

54: On pins and needles

55: Itching (to)

56: It may get plastered

57: Potpourri

58: Mr. Peanut accessory

60: Soprano Lily

61: Door sign

62: Braille markings