Puzzle

 ACROSS

  1 Common office plant

  5 "Success!"

 10 Mischievous child

 13 Octet of elite colleges

 15 Mayhem

 16 ___ date (deadline)

 17 Food package abbr.

 18 Does as one's told

 19 Nurse's favorite R&B group?

 20 Like unsorted laundry, often

 22 Group whose aim, per Lauren Bacall, was "To drink a lot of bourbon and stay up late"

 24 Childish denial

 26 Comedy show sounds

 27 Clock radio switch

 30 Golfs on a highway, e.g.

 31 R.R. stop

 32 Harvest

 33 Cartoonist's supplies

 35 Challenge to a bluff

 39 Word after "time" or "space"

 41 Spiral-shaped ear part

 43 Lesley of "60 Minutes"

 44 Gravy thickener

 46 Music player since 2001

 47 "___ my pleasure!"

 49 Box score stat

 50 Prone to snooping

 51 Religious leader

 54 "Get me?"

 56 Surfer's navigation aid?

 58 Wildflower habitats

 62 Syllable after "oom"

 63 Eatery enticement

 65 It merged with Exxon

 66 Singer Grande, familiarly

 67 Their shells are edible

 68 Used foul language

 69 Foreign policy advisory grp.

 70 Paperless read

 71 Must-have

DOWN

  1 Done, in Dijon

  2 Balanced

  3 Moreno of "One Day at a Time"

  4 *The Granite State (see letters 3 to 6)

  5 *One who's got the goods? (4 to 6)

  6 Part of an airport queue

  7 ___ the moon (thrilled)

  8 "The Crown" subjects

  9 Thrilled

 10 Suitcase dangler

 11 Landscaper's bagful

 12 Quick kisses

 14 Wineglass part

 21 Blacksmith's block

 23 Belittling the less powerful, or a hint to the starred answers' indicated letters

 25 Bit of a reprimand

 27 Javelin paths

 28 What an Impossible Burger lacks

 29 Bear with hot porridge

 34 *Diver's face cover (4 to 6)

 36 Dog food brand

 37 August 6 births

 38 Lord's counterpart

 40 Nth

 42 Rust, e.g., chemically

 45 Suffix for "access"

 48 Hieroglyph bug

 51 Channel for many a press conference

 52 Untruthful sorts

 53 Moral code

 55 Dog food brand

 57 A little, in music

 59 High-pitched woodwind

 60 Current travels through one

 61 Go downhill, perhaps

 64 Holstein's sound

Solution