This may be Elizabeth Gorski's toughest puzzle. It was fun, though, and completely do-able. I just had to keep plodding away...and check with Dogpile a couple of times.
The theme was great, although I haven't heard of the book...revealed at 37A: Theme of this puzzle, as hinted at by 17-, 23-, 45- and 59-Across (Le Carré book). The four theme answers are:
17A: Constructing things (Tinker Toys). The most clever theme clue.
23A: Custom (tailor-made).
45A: 1962 #1 hit by the Shirelles (Soldier Boy).
59A: Means of remote monitoring (spy camera).
The only theme answer to come easily was Soldier Boy, although I was able to get the others with the help of crosses. Even so, I wasn't sure where I was going with the theme. Once I said the first words a couple of times, it began to sound like the name of a book...which made it easy to fill in the blanks in 37A.
Just a few multiword answers...other than theme answers...but they were good ones.
20A: Couples cruise vessel? (Noah's ark). I managed to get it with just the N in place...that was in place only because 1D: Mailing label abbr. (Attn) was a good guess.
52A: It's made up of columns (op ed page).
22D: Burglarized (broke in).
53D: Key of Pachelbel's Canon: Abbr. (D Maj). That song is the reason I took piano lessons in the first place, although I still haven't been able to play a decent version of it.
There were a few unfamiliar answers...some came from crosses, others from Dogpile.
31A: Annoyance, in British slang (aggro).
3D: Director Wertmuller (Lina).
27D: Turkish title (Agha). Aargh...
33D: Choreographer Lubovitch (Lar).
35D: Actress Skye (Ione).
55D: Actress Meyers and others (Aris).
57D: City near Padua (Este).
Favorite clues include 25A: Some flames (beaus), 40A: Hard-rock filler (as a), 58A: Part of a camp schedule (mess), 13D: Like some calls (close), 50D: House call? (yea) and 60D: Anti anti (pro).
Favorite answers...10A: Jeanne (D'Arc), 14A: Father, Son and Holy Ghost (trine), 16A: Even, to Yves (egal), 21A: '50s two-seaters (Tbirds), 4D: Old cross (ankh), 6D: Prefix with fluoride (tetra), 7D: Edible mushroom (enoki), 11D: Outdoor market (agora), 12D: Corp. budget item (R and D)...research and development, for those of you who were lost, 25D: Californian's vacation destination, maybe (Baja)...good guess there, 43D: Subject of a 1940 biopic starring Spencer Tracy (Edison), 45D: It was split into two parts by the 1899 Treaty of Berlin (Samoa) and 48D: Charles __, "Gaslight" star, 1944 (Boyer).
Took some time to get 9D: Museum specialist (restorer) and 29D: Lobby (solicit)...but for some reason 38D: Departures (egresses) came to me with only the G in place. That meant that 43A: Hosiery hue was ecru, rather than nude...which actually would have been funny since it was followed by 44A: Stripped (naked).
I was initially stumped by the connected cluing at 66A: With 46-Down, Ohio State's __ Memorial Stadium. With J as the first letter, though, the name Jesse/Owens immediately came to mind. I have no idea why...or where it came from.
I'm guessing the roads will be bad in the morning, which means I'll need to get an early start. It snowed for about six hours today...very rare in this part of Colorado. If we'd gotten the giant flakes that sometimes fall, we'd have been buried. As it was, we got about six inches. Some of the streets are rutted...and freezing tonight. If we get more snow tonight, it will be that much more difficult to get around.
Better wrap this up then. Here's the grid...
...and I'll see you tomorrow.