John Le Carre, creator of fictional spy chief George Smiley, has donated his literary archive to Oxford University's Bodleian Library.
The archive contains handwritten and typed drafts of his novels, including Tinker, Tailor, Soldier Spy, and private photos and correspondence.
Other manuscripts include The Tailor Of Panama, which was turned into a film starring Pierce Brosnan and Geoffrey Rush.
Eighty-five boxes of material have been delivered to the library.
Le Carre's hero, George Smiley, achieved huge fame when he was portrayed on the BBC by Alec Guinness.
A spokesman for the Bodleian, said: "I can't say anything now - it's too dangerous.
"Meet me at 8.30, in the quad at Magdelen. Come alone and carry a copy of the Times. And make sure you are not followed!"