Theme: Cover Up - No conspiracy, just items you can wear over your regular clothes, even shorts.
16A. Gift-wrapping need: CLEAR TAPE. CAPE
37A. Hipster: COOL CAT. COAT
56A. Garment fittingly represented by this puzzle's circles: OUTERWEAR
10D. Outdoor lot for cars: PARKING AREA. PARKA
23D. "Blurred Lines" singer: ROBIN THICKE. ROBE (He is a son of actor Alan Thicke)
Argyle here, and C.C. doing back-to-back puzzles.
Across:
1. Cushions for gymnasts: MATS
5. Guard's shout: HALT
9. Rectangular Apple: iPAD
13. Tons: A LOT
14. Student's repetitive cry with a raised hand: "OH! OH!"
15. Sports page news: TRADE
18. Country singer Steve: EARLE
19. Rowdy crowds: MOBS
20. "Mr. November," for Derek Jeter, e.g.: MONIKER
22. Put pen to paper: WRITE
24. Rep.'s campaign rival: DEM.
25. Title for a knight: SIR
26. Home for a pride: LIONS' DEN
28. Genesis paradise: EDEN
30. Exile island for Napoleon: ELBA
31. Dance for which "it takes two": TANGO
33. JPEG relative: GIF. (Graphics Interchange Format)
36. Quotable boxer: ALI. Muhammad Ali
39. Duffer's dream: ACE. Hole-in-one in golf.
40. Air circulator: FAN
41. Capital of Yemen: SANA'A
42. Large First Nations tribe: CREE
43. "__ does it!": THAT
45. Meddling type of "driver" who's not actually driving: BACKSEAT
48. "Never heard of them": "WHO?"
49. Golf great Ernie: ELS
51. "Don't sweat it!": "RELAX!". "Chill!"
52. "Is that really your opinion?": "THINK SO?". Truncated "Ya think so?"
54. Not wavering in the least: SURE
55. TV host Lake: RICKI. I don't believe she has a show currently.
61. Signed in pen: INKED
62. Leisurely gait: TROT
63. Doing nothing: IDLE
64. Bird's snack: SEED
65. Drinks slowly: SIPS
66. Dragged to court: SUED
Down:
1. Apple computer: MAC
2. Every bit: ALL
3. Little piggy: TOE
4. Staying power: STAMINA
5. Place of rapid growth: HOTBED
6. Light-bulb moments: A-HA's
7. Prune, as a branch: LOP
8. Unifying idea: THEME
9. Aggressive poker table words: "I RAISE" but they could be bluffing.
11. "Inferiority complex" coiner Alfred: ADLER. (1870-1937) A bit tough for a Monday.
12. Doe or stag: DEER
15. Half a score: TEN. Didn't fool me; a score is twenty. (Counting on your fingers and toes then making a mark. My thoughts.)
17. Goes bad: ROTS
21. Last Greek letter: OMEGA
22. "O Pioneers!" author Cather: WILLA. Recent visitors here, both the book and the author.
24. Paternity test sites: DNA LABS
26. One of many that fall in the fall: LEAF
27. School near Windsor: ETON
29. Tiny speck: DOT
32. Final Four org.: NCAA. National Collegiate Athletic Association basketball play-offs.
34. Mountaineer's tool: ICE AX. Tinbeni axes the ice.
35. Thirds of a yard: FEET
37. Civil War side: Abbr.: CSA. (Confederate States of America)
38. Hall's pop music partner: OATES. We mentioned this "Sara" song recently.
42. Narnia creator: C.S. LEWIS. He is best known for the seven novels in The Chronicles of Narnia series.
44. Tooted one's horn: HONKED. Misdirected?
46. Salad oil bottles: CRUETS
47. Deborah of "The King and I": KERR. No tango here.
48. Complain with self-pity: WHINE
50. Ransacks: LOOTS
52. "Divergent" films heroine: TRIS. Tris Prior, Wiki "Divergent".
53. Baby goat: KID
54. "Enough!": "STOP!". Nope, four more.
57. School in the smallest U.S. state: URI. (University of Rhode Island)
58. End of a school address: .EDU
59. Malt beverage: ALE
60. Color of most pomegranate seeds: RED
Argyle