Since 1988, he has also served as the Director of Training for the Milton H. Erickson Foundation. Dr. Geary has presented training in Ericksonian methods of clinical hypnosis domestically since 1982 and in more than 20 countries internationally since 1992. He is co-editor, with Jeffrey Zeig, Ph.D., of The Letters of Milton H. Erickson and The Handbook of Ericksonian Psychotherapy, as well as the author of a number of book chapters and scholarly journal articles.