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^"Election Statistics". Annual Report of the Secretary of State to the Governor of Ohio, for the year 1875. Columbus: Nevins & Myers, State Printers. 1876. p. 303.
^Cole, Frank Theodore (January 1903). "Thomas Worthington". The "Old Northwest" Genealogical Quarterly. VI. Columbus, Ohio: 12. Retrieved November 1, 2011.
^Glashan, Roy R. (1979). American Governors and Gubernatorial Elections, 1775-1978. Westport, CT: Meckler Books. pp. 244–245. ISBN0-930466-17-9.