Today’s Saturday Stumper

Today’s Newsday  Saturday Stumper is by the puzzle’s editor, Stan Newman. I started with 13-D, four letters, “Typewriters with typeballs,” a giveaway, which gave away 9-A, five letters, “De Niro’s Raging Bull brother” and 16-A, five letters, “Crest collaborator.” Whee. But I found the bottom half of the puzzle considerably more difficult.

Some clue-and-answer pairs of note:

2-D, nine letters, “Major merger partner of 2015.” I dislike this kind of trivia.

4-D, six letters, “Belly up.” Thanks, poetry.

8-D, eight letters, “Unable to sail, say.” Adding an element of mystery to the puzzle.

9-D, eleven letters, “What Kramer saves catalogs from.” I like this kind of trivia.

11-D, five letters, “Overnight delivery specialist.” Note: specialist.

23-A, fourteen letters, “The nation’s largest power station.” Surprising to see it in a puzzle.

35-D, five letters, “Inspiration to many mathematicians.” In the online image of the print puzzle, the third column of text ends with the word many. Reading no further, I struggled for a ridiculously long time to figure out an answer.

29-A, four letters, “Ocean liner.” I was not fooled.

31-A, letters, “Number lines.” I was baffled.

33-D, nine letters, “Togetherness?” Nice.

38-D, eight letters, “Sheryl Crow and Paul McCartney.” I thought the answer might be a sign of the zodiac.

41-D, seven letters, “Windows users.” I get the joke, but are they truly users?

44-D, six letters, “Name associated with 11-Down’s time.” Some pretty rarefied trivia.

46-D, six letters, “Clash-prevention expression.” A little too Hi and Lois-y for me.

47-A, fourteen letters, “Fed people.” The answer has an odd ring to it.

48-D, five letters, “Down clue answer, often.” Nicely Stumper-y.

59-A, five letters, “Operatic Charlestonian.”A great clue.

My favorite in this puzzle: 54-A, four letters, “Gym ball.”

No spoilers; the answers are in the comments.