The charging documents summarize each classified document, but many of them are so damaging even the type of intelligence they contain is a secret.
Trump Kept Documents so Sensitive Even Their Access Codes Are Secret
It worried people all the time': How Trump's handling of secret documents led to the FBI's Mar-a-Lago search
Here's how government documents are classified to keep sensitive information safe
Photo in Trump DOJ Filing at Mar-a-Lago Reveals Highly Sensitive Documents - Bloomberg
Trump indictment details plot to hide sensitive documents, Donald Trump News
Classified records: 700 pages retrieved at Trump home in January, Donald Trump News
What do the labels on classified documents mean? Does Trump have a defense?
Read Trump's new charges in the classified documents case
US intelligence to examine documents seized from Donald Trump's home
Former President Donald Trump's Big Mouth Sets Up Top-Secret Case Against Him
Trump lacked power to declassify secret nuclear arms document, experts say
Presidential Power to Declassify Information, Explained - The New York Times