Ray Stannard Baker (1870-1946) was a journalist, editor, and author. He earned recognition for his articles on liberal reform, for his philosophical essays written under the pseudonym David Grayson, and for his authorized biography and other works on President Woodrow Wilson. Baker's papers contain materials collected for his biography of President Woodrow Wilson and related to the Paris Peace Conference (1919-1920), which he attended as Director of the American Press Bureau, and include correspondence, publications, photographs, and newspaper clippings.

The Robert Lansing Papers document the later years of Robert Lansing (1864-1928), lawyer, writer, and the longest serving of Woodrow Wilson's three Secretaries of State. During his tenure as Secretary of State (June 23, 1915 to February 13, 1920), the United States entered the First World War on the side of the Entente Powers. Deliberations and negotiations associated with the precarious neutrality which preceded this event and the troubled peace which followed it dominated Lansing's time in office and are reflected in his papers. Lansing's interests as a lawyer, which were international in scope and substance, and the diverse subjects which commanded his attention as a writer – subjects ranging from biblical history to English etymology – are also evident. The Lansing Papers consist of official papers, personal papers, writings and speeches, diaries, sketches, and photographs. Though by no means exhaustive, they shed light on many aspects of Lansing's life and times.

George F. Kennan (1904-2005) was a diplomat and a historian, noted especially for his influence on United States policy towards the Soviet Union during the Cold War and for his scholarly expertise in the areas of Russian history and foreign policy. Kennan's papers document his career as a scholar at the Institute for Advanced Study and his time in the Foreign Service, and include his correspondence files, published and unpublished writings, and personal files.

The George W. Ball papers document Ball's career as a lawyer, diplomat, investment banker and author. His involvement in Democratic politics, including his time spent on the presidential campaigns of Adlai Stevenson and his service as undersecretary of state for John F. Kennedy and Lyndon B. Johnson is well documented, as is his often overlooked role with Jean Monnet in European integration.