Though the bulk of the collection dates from the period (1973-1983) Dr. Thomas was president and chancellor of MSKCC, these files directly relate to his administrative functions. They include employee, ad hoc, managers, and overseers committees, and other committees related to the Center of which Dr. Thomas was a part. There are files on employees, certain drugs that got much publicity such as Laetrile, the Center's library; reference letters and recommendations; and letters of refusal, such as one declining the offer to become Chairman of the Advisory Council of the Center for Biomedical Education (January 24, 1973). Events such as a dedication to a new hospital (November 14, 1973) and awards dinners at the Center reflect special moments, while files about malpractice insurance, food service, parking, and staff lists depict the Center's everyday concerns. There is correspondence with other doctors in the Center and elsewhere, files on assorted professional societies, and some personal files of Dr. Thomas on such matters as his apartment, travel expenses, and taxes. Also included are files of grants to the Center given by the American Cancer Society and by the Rockefeller family, including related correspondence, Abby Mauze Rockefeller's will, and newspaper clippings of John Rockefeller's death. There are copies of lawsuits, copies of congressional hearings on controversial topics such as the Abortion Bill, and correspondence and newspaper clippings related to scandals such as the Summerlin Affair (1974), in which an MSKCC researcher falsified important research, and the toxic waste disaster at Love Canal, New York (1978).