US officials have released documents that they say were found at Osama Bin Laden's secret compound in Pakistan during a raid in2011.
Special operators killed the al-Qaeda chief during that operation and recovered the documents that officials have branded Bin Laden's Bookshelf.
As well as Arabic correspondence, there are English language books by Bob Woodward and Noam Chomsky, and others on economic and military theory.
More documents may yet be released.
The Office of the Director of National Intelligence (ODNI) said a "rigorous" review had taken place before the documents were released.
The documents - 103 papers and videos in all - include a number of translated letters, notes, and other material detailing al-Qaeda operations. Many of the documents also have a version available in Arabic.
In one of the letters, Bin Laden instructs one of his deputies to tell "our brothers" that they must remained focused on fighting Americans.
Their "job is to uproot the obnoxious tree by concentrating on its American trunk, and to avoid being occupied with the local security forces," he writes.