Senator and author of the Thirteenth Amendment to the United States Constitution, which officially outlawed slavery. Cassius M. Clay, ambassador, member of the Kentucky House of Representatives J. B. C. Drew, Union officer and Florida Attorney General See also American election campaigns in the 19th century Brooks-Baxter War History of the United States Republican Party Reconstruction Third Party System 1872 United States presidential election References Further reading Baum, Dale. The Civil War Party System: The Case of Massachusetts (1984) ch 8. Burg, Robert W. "Amnesty, Civil Rights, And The Meaning Of Liberal Republicanism, 1862-1872". American Nineteenth Century History 2003 4(3): 29–60. Donald, David. Charles Sumner and the rights of man (1970) online Eyal, Yonatan. "Charles Eliot Norton, E. L. Godkin, and the Liberal Republicans of 1872" American Nineteenth Century History 2001 2(1): 53–74. ISSN 1466-4658. McGerr, Michael E. "The Meaning of Liberal Republicanism: The Case of Ohio." Civil War History 28.4 (1982): 307-323. (1970). excerpt Rhodes, James Ford. History of the United States from the Compromise of 1850 to the McKinley-Bryan Campaign of 1896. Volume: 7 ch 39–40. (1920) online Slap, Andrew L. The Doom of Reconstruction: The Liberal Republicans in the Civil War Era (Fordham University Press, 2006) online Van Deusen, Glyndon G. Horace Greeley, Nineteenth-Century Crusader'' (1953) scholarly viograpohy online External links Proceedings of the Liberal Republican Convention, in Cincinnati, May 1st, 2nd, and 3rd, 1872 Overview of Liberal Republican National Convention, 1872 Political parties established in 1872 Political schisms Presidency of Ulysses S. Grant 1872 establishments in the United States 1876 disestablishments in the United States Classical liberal parties in the United States Defunct liberal parties in the United States 1872 United States presidential election Political parties in the United States Civil service reform in the United States History of racism in the United States