Elizabeth Haas Edersheim is a strategic consultant who works both with Fortune 500 companies and private equity investors. Prior to founding her own firm, New York Consulting Partners, Edersheim was one of the first female partners at McKinsey & Company. Her previous book, McKinsey's Marvin Bower, illustrates the business life and ideals of the founder of McKinsey, her mentor, who was a close friend and peer of Dr. Drucker. Edersheim's most recent book is The Definitive Drucker. Aside from her numerous publications, Edersheim has provided expert testimony to the U.S. Congress on industrial networking and industrial manufacturing policy. She holds a Ph.D. in operations research and industrial engineering from the Massachusetts Institute of Technology.