Puzzle

 ACROSS

  1 Kitchen meas.

  5 The best

 10 Shade tree

 13 Gaels' New York college

 14 Musket-loading implement

 16 Top numeral on a sundial

 17 *Crude jokes

 19 Tattoo liquid

 20 Tossed

 21 Octogenarian artist Yoko

 22 Golf ball perch

 23 Just fine

 24 U.N. financial arm

 27 Leave in shreds

 29 Reluctant to commit

 30 *Annual quartet

 34 Tech support whiz

 35 Anna's sister in "Frozen"

 36 *Attorneys

 42 "___ thou love me?" (Juliet)

 43 PC shortcut

 44 *Loaner from a garage

 48 ___ es Salaam

 51 Fowl place

 52 Angsty rock genre

 53 Poet's before

 54 Knock on the noggin

 56 Staff sgt., e.g.

 57 People who frequently change positions?

 59 Japanese sash

 60 Stray, or what the first six letters of the starred answers do (each by one letter)?

 64 End of some three-day weekends: Abbr.

 65 Jousts verbally

 66 Observed

 67 Request a biscuit

 68 Palindromic belief

 69 Shelter with a flap

DOWN

  1 Popular breath mint

  2 Sarcastic crying sound

  3 Snidely rude

  4 Cut back

  5 Anger

  6 "Well, lah-di-___!"

  7 Bird that runs fast

  8 Puts plates on?

  9 $1 Canadian coin, slangily

 10 Survey taken as voters leave

 11 See 15-Down

 12 Emcee's device

 15 With 11-Down, write quickly (to)

 18 Birds that fly fast

 25 Pout

 26 Roll up

 28 Be of ___ (help)

 31 Spacious

 32 Hush-hush grp.

 33 Tool with a chain variety

 34 Short beginning

 36 Health agcy.

 37 XXX counterpart

 38 Seizing unjustly

 39 "Mario Kart" competition

 40 Word with the same consonant sounds as "scheme"

 41 Often-dry gulch

 45 Kingdom southeast of Fiji

 46 Accompany

 47 Curly or Larry

 48 MA, BA or MBA

 49 Already come to light

 50 Take offense at

 54 Cherry ___ (certain firework)

 55 Slender reed

 58 Boot from power

 61 Filled-in word in the world's first crossword

 62 User's payment

 63 Kansas City winter hrs.

Solution