The Illustrated Herbiary, The Illustrated Bestiary, and The Illustrated Crystallary are all part of Maia Toll's Wild Knowledge series. Toll spent time studying the growing cycles of plants, the alchemy of medicine production, and the psycho-spiritual components of healing with a traditional healer in Ireland, as well as studying at The University of Michigan and New York University. She co-owns the Asheville, NC-based retail store Herbiary and runs the yearly Witch Camp event. Maia Toll's website is maiatoll.com.