Papers of the New York State Governor, 1901-1904. Both incoming and outgoing correspondence, three items of which concern the selection of Ray Brook as the proposed site of the State Hospital for consumptives. Correspondence with Horatio Collins King, Anson G. McCook, John G. McCullough, Nathan L. Miller, Henry Codman Potter, and others.

Papers of the Congressman from New York, United States minister to France, Vice-President of the United States, and Republican governor of New York State. Collection contains mostly incoming correspondence from clergymen, educators, financiers, journalists, and politicians. Some letters are addressed to Morton's executive secretary, Ashley W. Cole.