Statistics for occurrence #1 of “Mr. Lincoln” in chapter 22 of Benson J. Lossing, Pictorial Field Book of the Civil War. Volume 1.:

...ry of War of the conspirators, to blow up the National Capitol with gunpowder, some time between the 4th and 6th of July, at a time when both Houses of Congress should be in session therein, and when Mr. Lincoln , it was hoped, would be present. This infernal proposition to murder several hundred men and women (for on such occasions the galleries of the halls of Congress were generally filled with spectator...
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