UPA has published a major portion of the John D. Rockefeller Sr. papers covering the years of his rise--1877-1894. Researchers of the history of business, society, education, and philanthropy will find the papers a gold mine of documentation in all these areas during two decades of rapid change. Part 2: Business Investments Correspondence, 1881-1893 covers a broad spectrum of Rockefeller investment interests and proposals within Standard Oil and beyond. He had important Minnesota iron properties that would one day become a key component of U.S. Steel Corporation. He traded heavily in railroad securities on Wall Street, and he bought real estate, especially in Cleveland and the New York City area. As his reputation for wealth spread, increasing numbers of people wrote him with their detailed plans and urgent pleas for his participation. The files reveal much about the investments he avoided as well as those he pursued.