Correspondence, manuscripts, photographs, memorabilia, and printed materials concerning Berg's lifelong interest in and work for his alma mater. Berg served the University in many capacities such as vice-president and president of the Alumni Association of Columbia College, 1954-1958, and member of the board of directors of the Alumni Federation of Columbia University, 1946-1958. The correspondence deals chiefly with alumni affairs; some of the major correspondents include Harry J. Carman, Lawrence Chamberlain, Frank S. Hogan, Mr & Mrs Richard Rodgers, and Arthur Hays Sulzberger. Among the photographs are two signed by Dwight D. Eisenhower. Also included is a typescript memoir of Berg's three years as a student in the Columbia School of Law (1927). Berg collaborated with three other students on this memoir. Aaron Berg's correspondence with Dwight D. Eisenhower is at the Eisenhower Library. Also included are literary autographs and manuscripts purchased on the Aaron Berg Fund.

Correspondence and manuscripts of various literary figures, occasionally brought for this library by the Friends of the Columbia University Libraries. Authors include William Harrison Ainsworth, Augustine Birrell, Thomas Campbell, James Fenimore Cooper, Clement Clarke Moore, Carl Sandburg, A. C. Swinburne, Dylan Thomas, Anthony Trollope, and Talcott Williams.

A collection of letters, manuscripts, proofs, and drawings of English and American authors, including 33 letters from Alan Gabriel Barnsley (Gabriel Fielding) to Derek Stanford; a letter from James Boswell to George Colman the younger; a letter from Wilkie Collins; a letter from James Fenimore Cooper to William Buell Sprague; a letter from Dinah Maria Mulock Craik; letters from E.M. Forster; letters from Sarah Grand to James B. Pond; letters from T.B. Macauley; a letter from Hester Lynch Piozzi to James Robson; letters and cards from G.B. Shaw; letters from R.B. Sheridan to Thomas Grenville and to C. Ward, and a letter from Elizabeth Ann Linley Sheridan to R.B. Sheridan; a letter from William Wordsworth to F.W. Faber; a letter to Alfred, Lord Tennyson to Benjamin Disraeli; letters from Anthony Trollope written to Frederic Chapman, Mary Christie, J.T. Fields, Frederic Harrison, and others; letters from Ellen Terry and Rhoda Broughton, and postcards from Evelyn Waugh to Graham Ackroyd. The manuscripts include examples by Max Beerbohm, Arnold Bennett, Elizabeth Bowen, John Burroughs, Ivy Compton-Burnett, A.E. Coppard, Baron Corvo, Cecil Day Lewis, Ronald Firbank, E.M. Forster, George Gissing, Sarah Grand, A.P. Herbert, Rudyard Kipling, Edward Lear, Henry W. Longfellow, Amy Lowell, John Wilmot 2nd Earl of Rochester, G.B. Shaw, Edith Sitwell, and Logan Pearsall Smith.