Puzzle

 ACROSS

  1 John, Paul and George: Abbr.

  4 He-Man's twin sister

  9 Up, in baseball

 14 H+ or Cl-

 15 Silent actors?

 16 Care deeply about

 17 *Line about 23 degrees south of the equator (look down after reading letter 9)

 20 Island such as Bikini

 21 "Bingo!"

 22 ___ King Cole

 23 Fix

 25 Treated maliciously

 27 Atlas enlargement

 29 Most recent

 32 *Flexible fee format (... letter 2)

 36 Surfing need

 37 Photo

 38 Out ___ limb

 39 Superman enemy Luthor

 40 Citrus drink suffixes

 42 *Numbers' place (... letter 7)

 46 World capital with many onion domes

 48 Bright aquarium fish

 49 Kind of bean that's shaped like an organ

 51 Fighting fleet

 55 One may have pink feathers

 57 Org. that seizes kilos

 58 More fitting

 59 Without warning, and where the starred answers get tricky

 64 Squirrels climb them

 65 Circumvent

 66 Tiebreaker periods, briefly

 67 "It ___ been easy"

 68 No longer in

 69 Scared of public speaking, perhaps

DOWN

  1 "Norwegian Wood" instrument

  2 Cake with a hazelnut variety

  3 Be a busybody

  4 Showing pleasure

  5 Fruit punch brand

  6 Moody music genre

  7 Call, as a game

  8 Songwriters' rights org.

  9 Do the Wright thing?

 10 Tic-toe connector

 11 Pale beer

 12 Halo, e.g.

 13 Shelter around a tenant?

 18 Everyday

 19 German wine valley

 24 Blog feed letters

 25 Wait-listed passenger

 26 "Gross!"

 28 Subj. concerned with biodiversity

 30 Reindeer in "Frozen"

 31 Passage for a sermon

 32 Junk email

 33 ___ deck (place for a pool)

 34 Footwear for Alina Zagitova or Michelle Kwan

 35 Like the White Rabbit

 41 "Comp" or "poli" follower

 42 Confessed, with "up"

 43 Pilot's guess, briefly

 44 Attacked from the air

 45 Florida city by a bay

 47 Most curious

 50 Lop-___ rabbit

 52 A Musketeer

 53 Life partner?

 54 Pretentiously creative

 55 Relaxing soak

 56 Other, in Ecuador

 60 Chick's mother

 61 Egg cells

 62 Touch on the back

 63 Praiseful poem

Solution