- 17A: Dad's legal protection (PATERNITY RIGHTS).
- 23A: Arizona tourist mecca (PETRIFIED FOREST).
- 39A: Batting practice aid (PITCHING MACHINE).
- 49A: One-room schoolhouse heater (POTBELLIED STOVE).
- 61A: Using a euphemism (PUTTING IT MILDLY).
Like, for example:
- 1A: Pirate's booty (LOOT). Hate it when I'm totally confident about 1 Across and throw it in without checking the crosses and then it ends up being wrong. Wanted SWAG.
- 9A: One of the deadly sins (SLOTH). I've said it before and I'll say it again: this is by far my favorite deadly sin.
- 32A: Iwo __ (JIMA). Watched an awesome documentary the other day about the Vietnam Veterans Memorial. Wow, that was quite tangential.
- 64A: __-Chalmers: onetime big name in farm machinery (ALLIS). I seem to recall some griping about this company's name being used in a grid, but having grown up in North Dakota, it was a total gimme for me.
- 7D: Unit of petrol (LITRE). The use of the word "petrol" in the clue is a hint that the answer will use the British spelling.
- 10D: Slide rule number (LOGARITHM). Wow. That's not at all how I would spell LOGARITHM.
- 13D: Laces into (HAS AT). Never heard of "lacing into." Is it a regional thing? Have you guys heard of it?
- 52D: Dick __, Hoosier senator since 1977 (LUGAR). Every once in a while by political geekiness helps me out.
- 54D: Señor's feature? (TILDE). You got this one easy, right? It's a literal clue. The word "señor" includes a TILDE (over the n).
Other crosswordese in the puzzle that we've already covered:
- 15A: Aglio e __: pasta dish (OLIO).
- 47A: Stephen of "Michael Collins" (REA).
- 58A: Keds competitor (AVIA).
- 69A: 1920s Folies-Bergère designer (ÉRTE).
- 37D: "Double Fantasy" artist Yoko (ONO).
Everything Else — 5A: Lash marking (WELT); 14A: Sacramento's __ Arena (ARCO); 16A: __ Puffs (COCOA); 20A: Unborn, after "in" (UTERO); 21A: Manitoba native (CREE); 22A: Gazetteer statistic (AREA); 26A: On fire (LIT); 27A: Reagan's "Star Wars" prog. (SDI); 28A: Whale of a tale (SAGA); 35A: "Fine by me" (IT'S OK); 42A: Love (ADORE); 43A: Auto financing org. (GMAC); 44A: Cat call (MEOW); 45A: Lode material (ORE); 58A: Keds competitor (AVIA); 59A: Boot out (OUST); 60A: Like some basins (TIDAL); 65A: Physics subject (ATOM); 66A: GPA spoilers (DEES); 67A: Bloodsucker (LEECH); 68A: Upsurge (RISE); 1D: Drink like a cat (LAP UP); 2D: Go on the stump (ORATE); 3D: Large chamber group (OCTET); 4D: "__ is human ..." (TO ERR); 5D: Took the cup (WON); 6D: Drawing out (ELICITING); 8D: Trifled (with) (TOYED); 9D: Biol., e.g. (SCI.); 11D: Yellow shade (OCHRE); 12D: Handy bags (TOTES); 18D: Stir up (ROIL); 19D: Flag throwers, at times (REFS); 24D: South Pacific archipelago and nation (FIJI); 25D: Like Pindar's works (ODIC); 28D: Mud bath locale (SPA); 29D: Assist (AID); 30D: Potent '60s-'70s Pontiac (GTO); 31D: Like trapeze artists (ACROBATIC); 33D: Leo's studio (MGM); 34D: Almond liqueurs (AMARETTOS); 36D: Potsdam pronoun (SIE); 38D: London's __ Gardens (KEW); 40D: "What have we __?" (HERE); 41D: Passed and then some (ACED); 48D: Sparkling-wine center (ASTI); 49D: Like decrees from Benedict XVI, e.g. (PAPAL); 50D: Seed-to-be (OVULE); 51D: Champ's prize (TITLE); 53D: Question about Biblical betrayal (IS IT I); 55D: More off-the-wall (ODDER); 56D: Parking helper (VALET); 57D: "Family Ties" mom (ELYSE); 62D: "Sorta" suffix (-ISH); 63D: Bovary's title: Abbr. (MME.).