Correspondence, letter books, manuscripts, typescripts, notes, galley proofs, reports, banking records, pamphlets, and other printed materials. The so-called "private" letter books contain copies of outgoing personal and business letters, April 1914-Jan. 1918. The remaining correspondence files relate to the writing of Hepburn's two books HISTORY OF COINAGE AND CURRENCY IN THE UNITED STATES.. (New York, 1903) and A HISTORY OF CURRENCY IN THE UNITED STATES..(New York, 1915); to his activities in the fields of finance and money, such as the Pan-American Finance Commission (1915), the New York State Governor's Securities Commission (1920), and the Federal Milk Commission (1917); and his files regarding the establishment of the Columbia-Presbyterian Medical Center, 1918. Also, manuscripts, typescripts, notes, and galley proofs for the two books that he wrote; and six bank examiner's books used by Hepburn while he was U.S. Bank Examiner for New York, 1888-1892.