Cathexis - a treatise on the psychological concept of cathexis, or the process of becoming emotionally involved.
Vitae Diversitas - a book about the many living things in the world; basically, a monstrous manual
The Complete Symbologists Dictionary - a reference guide to symbols with a thorough and easy to use index; hence, you can look it up easy--i.e., just ask me in game what a symbol means, and unless it's very new or very obscure, it should be in here
Adventures in Astral Projection: The Mind's Guide to Space Travel - how to use astral aether to project your mind and/or soul
The Healing Arts - includes chapters on qi, hegnh, radiance, Foundation, heavenly light, blood, empathy, and demonic healing
Same Blood, Same Soul: The Mystical Secrets of Twins - explains how twins have all sorts of special bonds
Os Ruptor, Quam Destruere Cinereo Atriis - tells you how to destroy any given undead
Legends of the River Peoples - includes chapters on the Arbiter, nephesh, golems, kabbalistic information, river-faring, national myths, watchers, angels and demons, blasphemy, warlocks, Messiahs, prophecies, the ziz, bar juchne, Leviathan, behemoths, re'ems, shedim, dybbuks, broxa, and more
Curseweaving - how to control curses
Samfie Wars, a History - an incomplete history of the Samfie Wars from about 758 to about 958
Elven Blood Rituals - rituals of bonding families together