Maia Toll is the author of Letting Magic In, The Night School, and the Wild Wisdom series, which includes The Illustrated Herbiary, The Illustrated Bestiary, The Illustrated Crystallary, and Maia Toll's Wild Wisdom Companion. After earning degrees at the University of Michigan and New York University, Toll apprenticed with a traditional healer in Ireland, where she spent extensive time studying the growing cycles of plants, the alchemy of medicine making, and the psycho-spiritual aspects of healing. She is the co-owner of the retail store Herbiary, with locations in Asheville, NC, and Philadelphia, PA. You can find her online at maiatoll.com.

Kate O'Hara is the illustrator of the Wild Wisdom series, and a freelance illustrator based in Reno, Nevada. She received a BFA in Illustration from the University of the Arts in Philadelphia. Her work combines intricate nature drawings with decorative hand-lettering and rich color schemes. She can be found online at kate-ohara.com.