Back in January, the Special Counsel subpoenaed/made a document request to the National Archives for all documents on TFG being briefed on document reclassification and retention of classified documents. The 16 documents that satisfy such request are due to be given to the Special Counsel on May 24.
In a May 16 letter obtained by CNN, acting Archivist Debra Steidel Wall writes to Trump, The 16 records in question all reflect communications involving close presidential advisers, some of them directed to you personally, concerning whether, why, and how you should declassify certain classified records.
The 16 presidential records, which were subpoenaed earlier this year, may provide critical evidence establishing the former presidents awareness of the declassification process, a key part of the criminal investigation into Trumps mishandling of classified documents.....
According to the letter, Trump tried to block the special counsel from accessing the 16 records by asserting a claim of constitutionally based privilege. But in her letter, Wall rejects that claim, stating that the special counsels office has represented that it is prepared to demonstrate with specificity to a court, why it is likely that the 16 records contain evidence that would be important to the grand jurys investigation.
The special counsel also told the Archives that the evidence is not practically available from another source.
The letter goes on to state that the records will be handed over on May 24, 2023 unless prohibited by an intervening court order.
I suspect that these documents are some of the last documents needed to complete the Special Counsel investigation.