In Summer 2011, I conducted research for a biography of Nelson A. Rockefeller (NAR) supported by a Grant-in-Aid from the Rockefeller Archive Center (RAC). The biography builds on years of archival and secondary research that started in the 1990s, much of it in the RAC, which holds the personal papers of Nelson A. Rockefeller. The Rockefeller Family Collection of the RAC is the most important repository of documents related to Rockefeller's life. His papers are particularly extensive due to his administrative and political career in appointed positions in the Roosevelt, Truman, Eisenhower, and Nixon administrations, and because of his long tenure as Governor of New York and as Vice President under Gerald R. Ford. His business, philanthropic, and arts interests are also well documented. Indeed, the material is too voluminous for use on any one topic such as a biography, and some materials related to his activities do not necessarily reflect his personal involvement.