"The Mibbs-Spagno Theory of Gluttony"
Go to the village at the end of the woods  and approach the building on the left. The book is lying on a chest beside the tattoo shop .
"Famous Kings of History: Old King Oswald"
The next book can be found in the Ossuary, the location which you will visit during "Gone, but Not Forgotten". Underground, climb the stone stairs onto the top of the first building  and turn right. The book is lying on the balustrade beside the bridge .