Disintegrating Thesis Note
(Redirected from Thesis Notes)
Looted off monsters in Bedlam.
These are the keys to enter the lair of the resident Peerless, the Monstrous Interred Grizzle. You need to collect 5 of them and exchange for the Librarian's Key 
via Master Cohenn's quest, called "Misplaced." The reward for that quest, the Librarian's Key, is what's used to enter the Peerless Room.