Chiefly mss. and correspondence, including book reviews written for the New York Times (1969-1997) and mss. of Lehmann-Haupt's two novels: Me and Dimaggio (1986) and A Crooked Man (1995), as well as mss. of articles written for the Times and other publications. Correspondence is mainly from literary figures, including publishers and authors. There is extensive correspondence from William F. Buckley, Jr., George Plimpton, Steven M.L. Aronson, Louis Auchincloss, and A.M. Rosenthal.