WASHINGTON >> For generations, official American documents have been meticulously preserved and protected — from the era of quills and parchment to boxes of paper to the cloud, safeguarding snapshots of the government and the nation for posterity.

Now, the Trump administration has sought to expand the executive branch’s power to shield from public view key administration initiatives. Officials have used apps like Signal that can auto-delete messages containing sensitive information rather than retaining them for record-keeping. And they have shaken up the National Archives leadership.

To historians and archivists, it points to the possibility that President Donald Trump will leave less for the nation’s historical record than nearly any president before him.

Such an eventuality creates a conundrum: How will experts — and even ordinary Americans — piece together what occurred when those charged with setting aside the artifacts properly documenting history refuse to do so?

How to preserve history?

The Trump administration says it’s the “most transparent in history,” citing the president’s fondness for taking questions from reporters nearly every day. But flooding the airwaves, media outlets and the internet with all things Trump isn’t the same as keeping records that document the inner workings of an administration, historians caution.

“He thinks he controls history,” says Timothy Naftali, a presidential historian who served as founding director of the Richard Nixon Presidential Library and Museum in Yorba Linda, California. “He wants to control what Americans ultimately find out about the truth of his administration, and that’s dangerous.”

Trump long refused to release his tax returns despite every other major White House candidate and president having done so since Jimmy Carter. And, today, White House stenographers still record every word Trump utters, but many of their transcriptions are languishing in the White House press office without authorization for release — meaning no official record of what the president says for weeks, if at all.

“You want to have a record because that’s how you ensure accountability,” said Lindsay Chervinsky, executive director of the George Washington Presidential Library in Mount Vernon, Virginia.