Prosecutors have called back to the stand Georgia Longstreet, a paralegal for the Manhattan district attorney's office.

Longstreet testified last week to introduce some of Trump's social media posts into evidence.

Trump, sitting at the defense table, has been working diligently -- scribbling notes and thumbing through a stack of papers, marking some of them, and then placing them in another pile.

When court resumed after the mid-morning break, Judge Juan Merchan handed the defense a victory -- ruling to block the state's effort to include an excerpt of an interview Trump did with Larry King in 1999 as evidence.

"You are asking the jurors to draw an in inference that because Mr. Trump knew the laws in 1999, he knew them in 2016," Merchan said in denying the request. "That's a lot of speculation."

Manhattan DA Alvin Bragg entered the courtroom with prosecutors following the break. Trump turned around to look at the gallery before he sat down, appearing to spot Bragg.

Merchan signaled that the proceedings will likely end early today, after the prosecution calls its final two witnesses of the day.

Prosecutors next called custodial witness Jenny Tomalin, who works for Verizon, to testify about call records for former Trump CFO Allen Weisselberg's Verizon mobile phone.

Prosecutors may refer to calls between Weisselberg and Michael Cohen when Cohen testifies next week.

Jurors saw toll records from Weisselberg which appeared to stretch to hundreds of pages, showing each of the calls placed and received by Weisselberg. The records detail the length of each call in minutes, as well as the date, time, origination, destination, and the other phone number.

After Tomalin's direct examination concluded she stepped off the stand and court broke for the mid-morning recess.

Prosecutors called Daniel Dixon, who works as a lead compliance analyst at AT&T, to testify as a custodian of records about cell phone data.

Prosecutors used his testimony to enter into evidence phone records for Michael Cohen's company phone that jurors will likely see later when Cohen testifies.

As Dixon testified, Trump leaned forward in his chair with a yellow highlighter in hand, flipping through and marking up a stack of papers.

Defense attorney Emil Bove then did a detailed cross-examination of Dixon, as part of an effort to cast any possible doubt on records related to Cohen.

Dixon then stepped off the stand, with he and Trump exchanging tight smiles as he passed the defense table.

Former President Trump, on his way out of the courtroom at the end of the day's proceedings, assailed Judge Juan Merchan for declining to gag upcoming witness Michael Cohen for remarks he's been making about Trump and the case on social media.

"There is no gag order to Michael Cohen. What the judge did was amazing, actually was amazing," Trump said of Merchan telling prosecutors to ask Cohen to stop making comments.

"Everybody can say whatever they want. They can say whatever they want. I'm not allowed to say anything about anybody," Trump said.

Trump also reiterated that his repayments to Cohen for Stormy Daniels' hush payment were properly recorded in his company's ledger. Prosecutors have said the repayments were unlawfully marked as a "legal expense" to conceal their true nature.

"I didn't do the bookkeeping. I didn't even know about it, but a very good bookkeeper marked a legal expense down as a legal expense," Trump said. "They didn't call it construction. They didn't call it building something or concrete or electrical cost. They called it, very simply, a legal expense to a lawyer -- who's a lawyer, not a fixer -- he's a lawyer."

"A legal expense to a lawyer," Trump repeated.

-ABC News' Kelsey Walsh and Mike Pappano