Nude photos of Jackie Kennedy that surfaced in the early 70s were allegedly leaked to the public by her husband, Aristotle Onassis, as part of a smear campaign against her.
It was from the wedding of Caroline Kennedy, who married Edwin Schlossberg in 1986.
Since his death, it has stayed in the family but is very rarely used by any members.
In the 18 months since the project began, the archivists have opened 177 boxes ā each with an average of 400 items, some with as many as 1,200.