Diplomat, entrepreneur, philanthropist, and politician. Correspondence, memoranda, family papers, business records, diplomatic accounts, speeches, statements and writings, photographs, and other papers documenting Harriman's career in business, finance, politics, and public service, particularly during the Franklin Roosevelt, Truman, Kennedy, Johnson, and Carter presidential administrations.

Journalist and news commentator. Correspondence, memoranda, notebooks and notes, transcripts of interviews, radio and television scripts, news commentaries, articles, speeches, book drafts, background and research material, and other papers documenting Levine's career as a broadcast journalist and news commentator.

Journalist and socialite. Correspondence, clippings, notes, photographs, and other papers relating to Mortimer's professional and social activities in London and Moscow during World War II. Also contains material concerning Mortimer's education at Bennington College, a 1967 trip to Pakistan and other international locations, and a 1974 return visit to the Soviet Union.

Actor, director, and acting teacher. Correspondence, memoranda, production files, lectures, writings, scripts, biographical material, printed matter, and other papers relating to Strasberg's theatrical and film career, Method acting, the Actors Studio, and theater history.