Well-preserved notes by Hieronymus on the witcher Elgar

Associated quest

 * Scavenger Hunt: Wolf School Gear Upgrade Diagrams - Part 4

Journal entry

 * ''For safekeeping, Elgar hid his improvements to the School of the Wolf's equipment in multiple locations. One set he hid in an underwater cave beneath a castle in central Velen. Another he left in a cave to the south of Oxenfurt, while a third he placed in the elven ruins found on a small isle in southern Velen.