Warren Buffetts Ground Rules Using the letters Warren Buffett wrote to his partners between 1956 and 1970, a veteran financial advisor presents the renowned gurus ground rules for investingguidelines that remain startlingly relevant today. In the fourteen years between his time in New York with value-investing guru Benjamin Graham and his start as chairman of Berkshire Hathaway, Warren Buffett managed Buffett Partnership Limited, his first professional investing partnership. Over the course of that tim