Return to Brother Kristoff in the Cathedral Square. Give him the book The Stresses of Iron.
Now that I've finished copying the book, here's the original Stresses of Iron. Thank you for your patience, and if you see Milton please tell him I'm sorry for the long delay.
You will receive:
Were you able to find the book?
That's the one! Thank you, <name>. May the Light shine brightly upon both your body and spirit!
Upon completion of this quest you will gain: