Puzzle

 ACROSS

  1 Cake made with rum

  5 Like most permed hair

 11 Common email attachment

 14 Cordon ___

 15 Legal profession, familiarly

 16 Understand

 17 Chimney sweep's memoir? (Ella)

 19 Favorable vote

 20 First syllable of a kids' menu game

 21 Big letters in bowling

 22 General MDs, to insurers

 23 Motto for a Boston subway lover? (Ruth)

 27 Dallas baller

 28 Only partner?

 29 Herculean dozen

 30 Like lots of cars on lots

 32 Follows, as a diet

 35 County north of San Francisco

 37 Forensic lab evidence

 38 Hawk relative

 42 Find another purpose for

 45 Surface for airplane food

 46 Eyeball covering

 49 Bird in Liberty Mutual ads

 51 Before, poetically

 52 Stylish sirloin? (Ken)

 56 Big disturbance

 57 CPR pro

 58 Key near the space bar

 59 Kitchen pest

 60 Get in touch with a spam generator? (Tom)

 65 Call alternative, in stock trading

 66 Curved, as eyebrows

 67 Medical researcher's goal

 68 "Me time" destination

 69 Many writing assignments

 70 Youngster

DOWN

  1 U.K. channel

  2 "Green Book" star Mahershala

  3 Stooped

  4 Tax cheat's fear

  5 Middle: Abbr.

  6 Speech fillers

  7 Change a price label

  8 What you may "drop" on Valentine's Day, with "the"

  9 Scoldings

 10 Help with the dishes

 11 1960 film with a notorious shower scene

 12 Farther below the surface

 13 Celebratory meals

 18 Alexa's speaker

 22 JFK's war vessel

 23 Apollo 11 org.

 24 Tattoos, informally

 25 Requiring lots of reassurance

 26 London museum

 27 Saying nothing

 31 Be at the helm of

 33 Ltr. insert

 34 Turned white

 36 Sponge ball brand

 39 Steal, so to speak

 40 "Happy" songbird

 41 Examine

 43 Subjects of many school fairs

 44 Extremes of Marxism?

 46 Leftover bits

 47 Exercise that may be done with ankle weights

 48 Ray of "Goodfellas"

 50 State after Texas, alphabetically

 53 Computers with 27-inch models

 54 ___ Sketch

 55 Make a choice

 60 Carly ___ Jepsen

 61 "You there!"

 62 QBs' goals

 63 "Mork & Mindy" planet

 64 Concert souvenir

Solution