has studied herbs since 1969. Her attraction to fragrant plants led to an involvement in aromatherapy. Her other books include Herbs for Health and Healing
; The Illustrated Encyclopedia of Herbs
; and Herbs: American Country Living
. Keville is editor of the American Herb Association Quarterly
, an honorary life member of the American Aromatherapy Association, a member of the National Institute of Holistic Aromatherapy, and a founding professional member of the American Herbalist Guild. She travels throughout North America teaching seminars.