The Evangelical Alliance for the United States of America was a voluntary society for the promotion and manifestation of Christian unity, as well as the protection of religious liberty at home and abroad. Included in the collection are administrative records, correspondence, scrapbooks, and a photo album. Some records are in other languages such as German and French.

Papers of the Jay family and of those families related to the Jay family, including Bruen, Butterworth, Chapman, Clarkson, Dawson, Du Bois, Field, Iselin, McVickar, Mortimer, O'Kill, Pellew, Pierrepont, Prime, Robinson, Schieffelin, Von Schweinitz, Sedgwick, and Wurts. In addition to family and personal matters, the correspondence deals with anti-slavery, New York State civil service, repeal of the Missouri Compromise, the Civil War, the Blair Bill, international affairs, and New York City and State politics and government. There are letters from numerous prominent persons including George Bancroft, F.A.P. Barnard, Bismarck, William Cullen Bryant, Aaron Burr, James Fenimore Cooper, Ralph Waldo Emerson, Hamilton Fish, Albert Gallatin, Horace Greeley, Nathaniel Hawthorne, Oliver Wendell Holmes, Washington Irving, Frances Anne Kemble, Jenny Lind, Henry W. Longfellow, Seth Low, James Russell Lowell, John Stuart Mill, Alice Duer Miller, Clement Clarke Moore, J.P. Morgan, Thomas Nast, Commodore Matthew Perry, Franklin D. Roosevelt, Theodore Roosevelt, Elihu Root, Carl Schurz, William H. Seward, William T. Sherman, Charles Sumner, and John Greenleaf Whittier.

This collection contains papers of Walter Louis Dorn (1894-1961), professor of history, Columbia University, including correspondence, manuscripts, typescripts, notes, notebooks, photographs and related printed materials.