Examples from the Web for copperheadism
Another measure by our people would be attended with salutary results—the extermination of Copperheadism at home.The Great North-Western Conspiracy In All Its Startling Details|I. Windslow Ayer
The valor, prowess, skill, and loyalty of our victorious legions was a menace to copperheadism.Assassination of Lincoln: a History of the Great Conspiracy|Thomas Mealey Harris
Defeats in the field and Copperheadism at home combined in their dispiriting and deadly work.
With older brothers in the army he had supported his mother during the war, and had kept clear of copperheadism.The New Nation|Frederic L. Paxson
Many causes conspired to induce an obstreperous outbreak of "Copperheadism" in the spring of 1863.