The easiest way to find out where the diagrams are is to buy the right map. In this case it will be the "Edwin Greloff's first map" which you can buy from the Midcopse Armorer. Of course you can also look for the diagrams on your own.
During one of his numerous adventures, Geralt got his hands on a map covered with strange markings. He quickly deduced that they indicated the locations of hidden witcher caches and, intrigued by the chance of discovering long-lost crafting schematics, he set out to find them.
Edwin Greloff's first map
After being recruited by Professor Slavko Atimstein to join his research group, I began a study of the Griffin School of witchers. My base of operations was the tomb under the Crookback Hills. The professor claimed this was the final resting place for one of the "griffins" and wished to find a way inside it.
I quickly discovered a range of places of interest, each marked with a pictogram in the shape of a Griffin School witcher medallion. I've marked these points on this map.
Edwin Greloff. Adjunct in Natural History at Oxenfurt Academy
Series:
Midcopse Armorer
Velen / Novigrad
Enhanced Griffin School Gear (Boots)
Velen / Novigrad
Enhanced Griffin School Gear (Trousers)
Velen / Novigrad
Enhanced Griffin School Gear (Steel Sword)
Velen / Novigrad
Map location: Enhanced Griffin School Gear (Boots)
Map location: Enhanced Griffin School Gear (Trousers)
Map location: Enhanced Griffin School Gear (Steel Sword)
Geralt found all the caches marked on the map and recovered the crafting schematics contained therein. With these in hand, he could add life-saving improvements to his combat gear. He did not know how many more such caches remained undiscovered in the world - but hoped one day he would have the chance to find more.
