PLATT, Thomas Collier, 1833-1910


Library of Congress

Guide to Research Collections

Cornell University Libraries
Rare Books and Manuscript Collections
Ithaca, NY
Papers: In Governor of New York Alonzo B. Cornell papers, 1830-1904.


Dartmouth College
Hanover, NH
Papers: In Francis Russel’s manuscript, [197-], of President Makers from Mark Hanna to Joseph Patrick Kennedy.


Indiana Historical Society
Indianapolis, IN
Papers: Correspondence in William R. Holloway papers, 1824-1899.


Knox College
Seymour Library
Galesburg, IL
Papers: 1 letter (June 26, 1897) in Bookfellow Foundation autograph collection, 1705-1940; and 1 letter (December 29, 1905) in Seymour autograph collection, 1750-1945.


Library of Congress
Manuscript Division
Washington, DC
Papers: Correspondence in Louis Theodore Michener papers, 1880-1927. Finding aid.


New York Public Library
New York, NY
Papers: Correspondence in Levi Parsons Morton papers, 1868-1920.


New York State Library
Manuscripts and Special Collections
Albany, NY
Papers: 1881-1904. 21 letters. Also correspondence in Albert D. Shaw papers, 1830-1920; and Gilbert Hilton Scribner papers, 1868-1911.


Syracuse University
George Arents Research Library
Syracuse, NY
Papers: 1896, 1899. 2 letters.


University of Michigan
Bentley Historical Library
Ann Arbor, MI
Papers: Correspondence in Oliver Lyman Spaulding papers, 1861-1921.


Yale University Libraries
Manuscripts and Archives
New Haven, CT
Papers: 1851-1910. 7.5 linear feet. Correspondence, bills, testimony, speeches, political cartoons, scrapbooks, clippings, and biographical material. Focus is on inner workings of Republican party in New York with emphasis on period from 1896-1909. Includes approximately 200 letters from Theodore Roosevelt to Platt, and Platt’s replies. Finding aid.

Additional Papers: In William Thompson Gilman collection, 1771-1924; and Chauncey M. Depew papers, 1880-1928.