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The National Union Convention met in Philadelphia in August 1866 to create a political party that would back President Andrew Johnson's Reconstruction program and to elect a new Congress. Here, the convention is portrayed as a gathering of muzzled…

Sketch dealing with Cooperhead movement shows eagle, snake with human head, group of people and unfinished sketches of snakes.

Cartoon drawing in three scenes shows the trial and aftermath of Clement L. Vallandigham, a former Congressman and a Copperhead or peace Democrat, who in 1863 was arrested and tried on charges of treason relating to a speech he made while…

Portrait of Ohio Congressman Clement Vallandingham, ca. 1860-1869. He served as a Democrat in the House of Representatives from 1858 to 1863. In 1863, at the height of the Civil War, he was arrested for making treasonous statements against the Union…