Musty Tome
Found in Western Plaguelands.
Western Plaguelands
Item Count Chance 
Annals of Darrowshire quest1 100% Zone Spawns Coordinates Western Plaguelands 10 43.5, 70.1·43.4, 70.0·43.6, 70.0·43.4, 69.7·43.4, 69.5·43.6, 69.3·43.4, 69.2·43.5, 69.1·43.6, 68.8·43.4, 68.8