Davenport Brothers, The. Startling Wonders, Mysterious Displays and Unaccountable Manifestations! New York, 1864. Letterpress broadside (8 x 21 ¾”) describing the apparent spiritualistic manifestations caused by the famous brothers, with “no complicated machinery or glittering apparatus” and without “clandestine assistance.” Scattered stains in lower half, minor folds and wear at extremities. Signed “H. Houdini” in the upper half; signature blurry.