One book can be found on a table inside The Arcanaeum.They will be called ' Master Illusion Text.'
The books look like normal books, so they will not be too easy to find. It allows you to 'See what others cannot' for 30 seconds. The spell takes no magicka to use, but it has a pretty long charge time. Once the quest is started, Drevis will give you a special Illusion spell called ' Vision of the Tenth Eye.' You need to use this spell to find four Master Illusion Texts hidden throughout the College of Winterhold.
