puzzle

 ACROSS



  1 Rotary phone feature

  5 ___ on the back

  9 Doctor-repelling fruit, proverbially

 14 A fan of

 15 Modern home of the Americas' oldest-known civilization

 16 Classic cleaning compound

 17 Expressive bar patron?

 19 Justice Kagan

 20 Country south of Sicily

 21 Countess's husband

 23 List unit

 24 John Legend hit whose lyrics mention "perfect imperfections"

 26 Slightly more than never

 28 Renter

 29 Person who retouches photos, informally?

 33 Went fast

 35 Reveal that you know

 36 Compen-sated

 40 Sooner's alternative ... or, read as two parts, a theme hint

 42 Nine-digit IDs

 43 Mythical mischief-makers

 45 Broadcast again

 47 What lets you convert a summer shirt into a winter one?

 49 Woos

 54 "The Aeneid"

 55 Be immediately noticeable

 56 Layered hairdo

 58 Experiment results

 61 Seaside

 62 Time to solve this crossword

 64 Boxer's training clock?

 66 Superior group

 67 Voice above bass

 68 Claim on a house, say

 69 Doles (out)

 70 Enjoy time off

 71 One can refract light

DOWN

  1 Gloomy

  2 Take a breath

  3 Coral islands

  4 Drawing games?

  5 Sauna site

  6 River restraint

  7 Locality

  8 Happy cat sound

  9 Sixteenth prez

 10 Codes of conduct and others

 11 Deceptive excuses

 12 Quiet road, or part of a busy one

 13 Test

 18 Thin cookie

 22 Salmon at a deli

 25 Breakfast, lunch or dinner

 27 Org. for backs and ends

 29 Pumpkin eater of rhyme

 30 Imaginative thought

 31 Very long time

 32 O.R. workers

 34 Show concern

 36 Word before "shop" or "project"

 37 Tavern offering

 38 "That's enough!"

 39 Convention attendee

 41 Alternative to pasta, perhaps

 44 Knight's title

 46 Cook in the oven

 48 Doze (off)

 50 How Sisyphus constantly travels

 51 Fellow resident, informally

 52 Soup dish

 53 Backs of boats

 55 Endures

 56 Dandelion part

 57 Swiss cheese feature

 59 Way off

 60 One of 100 in Scrabble

 63 "That's right!"

 65 Youngster

solution