About Joseph Maciariello

Joseph A. Maciariello was a colleague of Peter Drucker for 26 years and taught Drucker's courses when Drucker reduced his teaching load. He coauthored The Daily Drucker and The Effective Executive in Action with Peter Drucker. He is the Director of Research and Academic Director at the Drucker Institute and Horton Professor of Management at The Peter F. Drucker and Masatoshi Ito Graduate School of Management.
Karen E. Linkletter, a historian, teaches American Studies at California State University at Fullerton. The first archivist at the Drucker Institute and a Drucker scholar in the liberal arts, she also has experience in the financial services industry. She holds a Ph.D. and M.B.A. from Claremont Graduate University.