| 1 | Distance below a surface DEPTH.  | 
| 6 | Wood for making bats ASH.  | 
| 9 | IRS expert CPA.  | 
| 12 | Stadium snack NACHOS.  | 
| 14 | Sing doo bah doo bah doo SCAT.  | 
| 16 | ___ milk OAT.  | 
| 17 | Quiver contents ARROWS.  | 
| 18 | The Maltese Falcon film genre NOIR.  | 
| 19 | FedEx rival UPS.  | 
| 20 | Stimpy's pal REN.  | 
| 21 | Season AUTUMN.  | 
| 23 | NBA network ESPN.  | 
| 26 | Stone fruits APRICOTS.  | 
| 28 | Square root of XLIX VII.  | 
| 29 | Starbucks special during 21 Across (abbr.) PSL.  | 
| 31 | Artist Walker KARA.  | 
| 32 | Accommodation for student with ADHD IEP.  | 
| 33 | Secret menu treatment ANIMALSTYLE.  | 
| 38 | Four less than 28 Across, in modern-day Rome TRE.  | 
| 39 | What you may have done to a Facebook post LIKEDIT.  | 
| 40 | L org. CTA.  | 
| 41 | Hawaiian Islands or British Isles ARCHIPELAGO.  | 
| 43 | Slang for excellent or exciting, according to Merriam-Webster LIT.  | 
| 44 | Athletes Raisman and Wagner ALYS.  | 
| 45 | Economist's stat GNP.  | 
| 46 | The foie gras of the sea? UNI.  | 
| 47 | Break up SEPARATE.  | 
| 51 | Become an accomplice ABET.  | 
| 52 | Festival regulator, in Caesar's time AEDILE.  | 
| 53 | Digital communication sys.? ASL.  | 
| 55 | __ Arbor ANN.  | 
| 57 | That girl in Paris ELLE.  | 
| 58 | Those girls in Buenos Aires CHICAS.  | 
| 62 | Gathering of quilters BEE.  | 
| 63 | You might save one for a friend SEAT.  | 
| 64 | Itty-bitty TEENSY.  | 
| 65 | Georgian initials, once SSR.  | 
| 66 | Library sound? SHH.  | 
| 67 | Athletes Kournikova and Pavlova ANNAS.  |