Office of the Messrs Rockefeller.

John D. Rockefeller, Jr. joined his father's personal office on October 1, 1897, and became his father's closest associate in the growing philanthropic activities of the office. Although Mr. Rockefeller, Sr. made only occasional visits to the office after 1897, he maintained close contact with it's activities.

In 1897, there were seven employees in the office, by 1960, the number had grown to over 200. John D. Jr.'s five sons joined the office during the 1930's.

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