puzzle

 ACROSS

  1 Aladdin's discovery

  5 Grovel

 10 Congers

 14 Biblical brother

 15 Beehive State city

 16 Diminutive superhero (with "The")

 17 Get down to basics

 19 Human fountain of knowledge

 20 Sudden increase

 21 Making possible

 23 Caisson's contents

 26 Blackthorn plum

 27 Deerstalker, e.g.

 30 John, Paul or John Paul

 32 Perspires

 36 Herrings' kin

 38 Big name in household cleaning

 39 Certain Asian royal

 40 Type on a computer

 43 Catania's volcano

 44 Fish market presence

 46 Making improvements or corrections to

 48 Ballpark purchase

 50 Ferris wheel, e.g

 51 Certain notes

 52 "I'm listening"

 54 In need of stitching

 56 Where one is always looking up?

 60 The spirit of Russia?

 64 "Arrivederci"

 65 Believe the bluff

 68 Female possessive

 69 Door swinger

 70 Corm of the taro

 71 Atlantic bird

 72 Eschewed a restaurant

 73 Beginning course, sometimes

DOWN

  1 Serves that don't count

  2 "... and make it fast!"

  3 French Sudan, once

  4 Absolutely first-class

  5 PC chip, briefly

  6 "Bobby Hockey"

  7 Answered the alarm

  8 Makes level

  9 Kansas City team

 10 Keen in discernment

 11 Fancy sewing case

 12 "Love" attachment

 13 More than self-confident

 18 Speeds, to a conductor

 22 College football team's goal

 24 "Shake a leg!"

 25 "___ sesame"

 27 Severe, as weather

 28 Texas beer

 29 A golden rule, e.g.

 31 Glyceride, e.g.

 33 Prison in commotion?

 34 1,000 kilograms, to a Brit

 35 Smelter wastes

 37 V-formation ruiner?

 41 Give off

 42 Change, as a room

 45 Pirate's take

 47 Courage

 49 "Aha!"

 53 Like a pitcher's perfect game

 55 Canonical hour

 56 Aftermath of a hard workout

 57 Wedding cake feature, often

 58 Owl's home, often

 59 "___ eyes have seen ..."

 61 Wonderland bird

 62 African antelope

 63 Not underneath

 66 Some movie special effects, for short

 67 Boy toy?

solution