The Friends and Services series is primarily John D. Rockefeller, Jr.'s personal correspondence with his friends and relations. Other files deal with a variety of support, service, and administrative activities such as the operation of the Family Office, family membership in social clubs, family doctors, management of family garages and stables, and arrangement for the biographies of John D. Rockefeller and John D. Rockefeller, Jr.

The Public Relations Department papers document the general activities and public opinion of the Rockefeller family during the years 1946-1961. Nelson, Winthrop, Laurance, David, and JDR 3rd are mentioned most frequently throughout the collection. The collection is primarily made up of correspondence between Rockefeller brothers and various public relations employees, studies, administrative files, articles and clippings. A large amount of material relates to Nelson's foreign aid projects in Venezuela and Brazil, specifically the American International Association for Economic and Social Development (AIA) (Series 1) and the International Basic Economy Corporation (IBEC) (Series 2). Nelson's political campaigns are documented heavily as well (see Series 6, Politics, 1941-1960).