Bob Greenleaf lived near Peter Drucker and befriended him soon after Drucker immigrated. Bob & Esther entertained the Druckers frequently and Esther delighted in challenging Peter on all kinds of issues.
Later, Greenleaf invited Drucker to lecture at many AT&T seminars, and Drucker invited Bob to speak for the AMA.
In the Introduction to the book "On Becoming a Servant Leader," Drucker reflects on their long relationship.
Don Frick
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