Today’s Saturday Stumper

Today’s Newsday  Saturday Stumper is by Stella Zawistowski. Boy, it is ever. I made quick work of the northeast corner, beginning with 10-A, four letters, “Four-year-old program” and 13-D, four letters, “They have all the answers.” I made much longer work of the rest of the puzzle. Some clue-and-answer pairs of note:

10-D, eleven letters, “Closely held.” Getting this answer early on helped a lot.

14-A, ten letters, “Filler of notebooks now stored in lead-lined boxes.” A giveaway? I’m not sure.

15-D, five letters, “Sat (for).” The parentheses make it a bit tricky.

21-A, five letters, “Pretty good.” I’d say more than “pretty good.”

21-D, twelve letters, “Where dogs are often led around.” I think I understand this clue.

22-A, eleven letters, “Profitless pursuit.” I am glad that this puzzle wasn’t one.

27-A, five letters, “Postal Service metallic concern.” True, to my surprise.

33-A, nine letters, “What bows show.” Such an unusual word to see in a puzzle.

37-A, nine letters, “Early retirement vehicles.” An out-of-the-way answer, I’d say.

42-A, three letters, “Tadpole-shaped small things.” A wildly inventive clue.

54-A, ten letters, “Effortlessly.” An unusual answer.

57-A, ten letters, “Furniture store adjective.” An unusual way to clue the word.

My favorite in this puzzle: 40-A, eight letters, “Breakup music?”

No spoilers; the answers are in the comments.