The first tome contained a theory of possible binding rituals using the magic of old, it depicted a ritual which included the binding of an additional entity to a living vessel... the description was vague but Wilhelm did notice a similar magic pattern that was used by the student that helped him with the opals... what was he doing? summoning a familiar?
The next one was a thick guidebook on summoned creatures, but the content mainly repeated what was looked over in the lecture, as he closes the book, he sees that the author of the tome indeed was his teacher - Honair.
The first article binder was mostly contained with failed experiments on forcing good creatures to be bad and vice versa, that mostly ended up with the death of the assistants doing the experiment, it contained many pictures and schematics, though none of them were even close to yours...
On the other hand the other binder contained a bit of info on a man named Alex Magewell, the surname rings a bell - yes your father had a friend named Magewell, you can say that his citations were all over the articles that researched, well mostly speculated about the possible way to alter moral compass using an ancient method preformed by the hags of old, where the creature was given a new moral compass via branding, unfortunately those branded didn't survive for long taking their own lives, to end the suffering...there was an incomplete schematic image of the brand. Magewell must be the leading researcher.... only if you could get your hands on his work for more information...
The last one was a scroll that contained the basic instructions and steps needed for summon familiar spell, the scroll is useless for casting, but good enough for transcription, next to it there were a couple of crumpled papers with the compass scheme and a bit of blood, it looks like someone wanted to change familiars moral compass and wasn't lucky with the endeavour.
As you finish going trough the literature you catch yourself yawning, how long have you been here?? you dont know, for the library Is located underground, so that time and weather doesn't affect the process of studying, but you do know that you have been here long enough to feel absolutely exausted.