[ELECTION OF 1864 - COPPERHEADS] Copperhead Conspiracy in the North-West. An Expos of the treasonable order of the 'Sons of Liberty.' Vallandigham, Supreme Commander. New York: John A. Gray & Green, [1864].8vo (228 x 145 mm). 8pp., single folded sheet. An attack on Clement L. Vallandigham, leader of the Peace Democrats, whose activities at the Chicago convention contributed to ruining Democratic chances in the election of 1864. SCARCE: according to online records, no copy has appeared at auction in at least 50 years. Sabin 16706.