In its final hours, the Obama administration released the last of three instalments of documents belonging to Osama bin Laden.
The documents were seized in a 2011 raid that killed the al-Qaeda leader in his secret compound.
Tracking down and killing the man behind the 2001 terrorist attacks on America is one of President Barack Obama's greatest accomplishments.
Intelligence officials have been working for more than two years to declassify the hundreds of documents captured in the raid.
The last batch consisting of 49 documents include letters to and from bin Laden, his deputies and his mother.
The documents also include a running disagreement between bin Laden and al-Qaeda's affiliate in Iraq, which morphed into Islamic State.
Bin Laden is responsible for orchestrating the 2001 September 11 terrorist attacks on the US that killed nearly 3,000 people.
