Ive ran into a glitch. For a while now ive had this book called N'Gasta! Kvata! Kvakis! that i couldnt get rid of because its a quest item. Just now i got the quest from the Orc in the College of Winterhold library. He wants the book and told me to find it in Bleak Falls Barrow. Well even though i already raided that place, and had the book in my inventory, i went through it again. Got to the chest that shows an arrow, the book isnt there. I even took everything out of the chest. So i go to the Orc to see if he will take the one i already have, and nothing comes up. It was my bad decision to raid random caves early in the game. I end up with quest items like this, or having to go through the same areas over again because it seems like there is always some type of quest linked to a place. If i ever replay this game im not going to wonder around like that again.
Something similar happened to me with the Bard's College and the instruments they wanted.