Dr. Arthur O Tucker, a plant taxonomist, is Professor Emeritus of Delaware State University and Founder and Co-Director Claude E. Phillips Herbarium (ca. 87th largest out of 525 herbaria in the U.S.). He is an expert in worldwide plant identification and the co-author of six books, including The Encyclopedia of Herbs (Timber Press). He has authored or co-authored 30 book chapters, 91 refereed scientific publications, and 169 popular publications. Tucker is the also coauthor of Unraveling the Voynich Codex published by Springer in 2018. Dr. Jules Janick is the James Troop Distinguished Professor in the Department of Horticulture and Landscape Architecture at Purdue University. He is the Founder and Editor of Horticultural Reviews and Plant Breeding Review and has authored or edited over 150 volumes and has published widely on horticulture, genetics and breeding, horticultural history, art, and iconography Janick isthe coauthor of Unraveling the Voynich Codex published by Springer in 2018.