A Leaf From History Published by the Union Republican Congressional Committee, December 3, 1864. Report of J. Thompson, Secret Agent of the late Confederate Government station in Canada, for the purpose of organizing Insurrection in the Northern States and burning their principal Cities, etc. Also how Greeley would have admitted the Rebel Agents into Washington without restriction! How the Tribune gave comfort to the Rebels., 1864-12-03, BR. 815, Box: 1, Folder: 31. Regional history broadsides, 6629. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1945883 Accessed September 07, 2026.