Some might say David Rockefeller, a scion of America’s greatest fortune and the veteran chief executive of Chase Manhattan Bank, was a dedicated networker long before the age of Facebook.
That would grossly understate his horizons. Mr. Rockefeller recorded contact information along with every meeting he had with about 100,000 people world-wide on white 3-by-5-inch index cards. He amassed about 200,000 of the cards, which filled a custom-built Rolodex machine. He kept the 5-foot high electronic device at his family’s suite of offices in New York City’s Rockefeller Center for about half a century.
“In the annals of CEO history, the breadth and depth of this record of contacts stand out,’’ said Nancy Koehn, a Harvard business professor and historian. “This is a man with a large, long reach.’’
That would grossly understate his horizons. Mr. Rockefeller recorded contact information along with every meeting he had with about 100,000 people world-wide on white 3-by-5-inch index cards. He amassed about 200,000 of the cards, which filled a custom-built Rolodex machine. He kept the 5-foot high electronic device at his family’s suite of offices in New York City’s Rockefeller Center for about half a century.
“In the annals of CEO history, the breadth and depth of this record of contacts stand out,’’ said Nancy Koehn, a Harvard business professor and historian. “This is a man with a large, long reach.’’

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