12. Voice of the masses

14. Sequel of 1974

16. Ones who've done time

17. Bass extension

18. Rey finds his ship in "The Force Awakens"

19. Business structure change

20. Short review?

22. Poker giveaway

23. Hotmail is part of it

24. "Cat on ____ Tin Roof"

25. Romania, to the Romans

26. Mercury rocket

28. ___ kind of weather

29. Movie about a famous 1974 sporting event between 1-Across and 52-Across

34. Totaled

35. Penguin suits

36. Mountain chain

37. ___ Jury (Mike Hammer novel)

38. Some "wax"

41. 15th of the month

42. Title until 1917

43. City near Giza

45. Placeholder abbr.

46. Average

47. Brown

48. Bad plan

52. One side of the contest featured in 29-Across

53. Makes potable, perhaps

1. Apartment amelioration, in ads

2. Excited about

3. China's second-longest river

4. Hts.

5. ___-jongg

6. GIs' grub

7. Deft

8. Storehouse

9. "___ for All Seasons"

10. White-handed gibbon

11. Shot, as film

12. Diseases

13. Ringing (up)

14. Spark

15. Some artisinal detailings

20. Terbacky hunk

21. Site of an important archaeological find in 1799

22. City unearthed in "Raiders of the Lost Ark"

24. An important staple of the medieval diet

25. Levee

26. Buys in

27. Lowest ranks in many games

29. Spirit

30. Clutch

31. Won over

32. German industrial region

33. Windows file extension

37. Sabra's home

38. Lovelace and Carter

39. Primp

40. Pop

42. Porsche model

43. Trainee

44. Japanese sequential art

46. Hipster-favored beers, for short

47. Prefix between giga- and peta-

49. Abbr. in a help wanted ad

50. "___ Ran the Circus": Seuss book

51. Nantes negative