1: Trudge through melting snow

6: Way off

10: Resistance units

14: Thick-skinned mammal

15: Las Vegas rollers

16: Many millennia

17: Cast member

18: Mend socks

19: Casino card game

20: Cease's partner

22: Small birds

24: Smidge

25: Information from Deep Throat

27: Fingers and toes

29: Accentuates

33: Guiding principle

34: Thy, nowadays

35: Held on to

37: Haut ___ (high society)

41: Diddly-squat

42: Brakes

44: Ocean bird

45: They're on the staff

48: Revue segment

49: Connors of 'Mannix'

50: Wrinkly-faced canine

52: Like some porcelain pieces

54: Speak uncertainly

58: Blue funk

59: Ad ___ committee

60: Like the fabled piper

62: Breaks out in a cold sweat, maybe

66: Water color

68: Feature of Karloff's Frankenstein monster

70: Quarrel

71: Crude living quarters

72: Treat a pledge poorly

73: Crystal-lined rock

74: Run for

75: High point

76: Nosed (out)

1: Roe source

2: Head hunters?

3: Goes for

4: Auto option

5: Mounts

6: Include

7: That's an order

8: Caustic

9: Lease

10: Loutish fellow

11: Intoxicating

12: Aesop's lesson

13: Priggish people

21: Busy work

23: Con job

26: Boat bottoms

28: Slam dunk point count

29: Lip-___

30: Slave away

31: Have the final say

32: Bicycle-wheel feature

36: Matched pair

38: Tooth's partner

39: Wellington's title

40: Scratched (out)

43: Easel, e.g.

46: 28,800 seconds before midnight

47: Drainage reservoir

49: Stamped by machine, as mail

51: Oriental entertainer

53: Desert illusion

54: Former Iranian rulers

55: Brimless hat

56: Intense

57: Summarize

61: Stupefy

63: Bug-eyed

64: Fellow, slangily

65: Watermelon beginning

67: 'Shoot'

69: Mardi Gras luminary