The charging documents summarize each classified document, but many of them are so damaging even the type of intelligence they contain is a secret.
Investigators get hold of Trump's recording on having access to secret document
A side-by-side look at the Trump, Biden classified documents
Nuclear or not, classified or not, Mar-a-Lago files spell out jeopardy for Trump, Donald Trump
Presidential Power to Declassify Information, Explained - The New York Times
Why Trump's prosecution for keeping secret documents is lawful, constitutional, precedented, nonpartisan and merited - Government Executive
DOJ Mar-a-Lago photo annotated: Top secret records at Trump's estate
When he leaves office, can ex-President Trump be trusted with America's national security secrets?
Trump Kept Documents so Sensitive Even Their Access Codes Are Secret
Material on foreign nation's nuclear capabilities seized at Trump's Mar-a-Lago - The Washington Post
Trump Blames Golf Shirts for Federal Crimes in Bizarre Interview
The Mar-a-Lago Raid Was Necessary to Protect U.S. Intelligence - WSJ