Seligman's correspondence files on United States foreign policy issues. These files of letters to government officials, congressmen, senators, scholars, and other individuals deal with Seligman's ideas, suggestions, and opinions on the Vietnam War, the Arab-Israeli controversy, China, India, and Cuba. In most cases there are one or two letters to or from each individual. The major correspondent is Ellsworth Bunker, U.S. Ambassador to Vietnam.

Folsom's long, detailed letters discuss current events (both local and national), his career, social life, and friends.

Legislative reference and correspondence files, general correspondence files, speeches, reports, press releases, photographs, films, and memorabilia. Please note: This collection is currently unprocessed.

Personal correspondence, speeches, subject files, photographs, and printed and miscellaneous material of Hogan. The correspondence, speeches, and other material relate primarily to his activities as District Attorney, and to his unsuccessful campaign for the U.S. Senate, 1958. The papers also reflect Hogan's deep concern for Columbia University, as a Trustee and a member of numerous alumni committees. Among the major correspondents are Harry J. Carman, Dwight David Eisenhower, Robert F. Kennedy, Arthur Hays Sulzburger, and Herbert Bayard Swope.

Papers of Smedley, including correspondence, memoranda, manuscripts, and printed materials about the United Nations, national politics and elections, and civic organizations in New York City and in Connecticut. Correspondents include Hubert Humphrey, John F. Kennedy, and Bertrand Russell.

Files of political correspondence and papers of Tanner. The majority of the correspondence deals with city and state elections. The correspondents include Charles Evans Hughes, Theodore Roosevelt, Franklin D. Roosevelt, William Howard Taft, and Fiorello La Guardia. Also, a collection of eighteen scrapbooks.

Letters to and copies of letters, letter books, and miscellaneous papers of (George) Frederick William Holls. There is also an amount of clippings and other miscellanea. The correspondence is with many persons important in the areas of politics and education. The subject content of the letters is international in scope, including such matters as the Suez Canal, the Webster-Ashburton Treaty, the Dreyfus affair, the Hague Peace Conference, Rhodes Scholarships, unification of education in New York State, the St. Louis Exposition, and tenement reform. Among the principal correspondents represented by groups of letters are John Barrett, Nicholas Murray Butler, Henry W. Diederick, Theodor Lange, Hugo Munsterburg, F.J. Odendahl, Theodore Roosevelt, and Carl Schurz.

This collection contains correspondence, manuscripts, documents, and printed materials of the noted lawyer and Congressional Representative, Frederic René Coudert, Jr.

This collection contains correspondence, subjects files and scrapbooks pertaining to Frederick R. Coudert, Sr.

The Gay J. McDougall Papers document the South African anti-apartheid movement in the 1960s through the 1990s. The records primarily include correspondence, writings and speeches, administrative records, court documents and case files, and newspaper clippings related to human rights, anti-apartheid activism, political prisoners, the 1989 Namibian election and the 1994 South African election. The collection documents the work of McDougall; the Lawyers Committee for Civil Rights Under Law Southern Africa Project, a non-governmental organization (NGO); and the Commission for Independence in Namibia.