Go to see Janitor Gorreth ( -39, -0, -24 ) /waypoint -39.08, -0.04, -24.43 on the ground floor. He asks you to take the journal to Vargorn the Historian so that it may be copied and distributed. Vargorn is standing outside the keep on the left as you zone out to Greater Faydark.
Vargorn gives you a copy of your own, for your troubles.
Keep asking him if he's done till the quest updates - about 5 times or so, till he'll be finally done(no need to wait, just to keep asking him if he's done)