[EXHIBITION] Cantelo’s Patent Hydro Incubator Ephemera. 1850s. A small archive of three pictorial broadsides, three handbills, and five contemporary clippings (two pictorial, extracted from The Illustrated Exhibitor), heralding the “greatest wonder of the age!” an “egg-hatching machine, as shown by command at Windsor Castle.” Letterpress handbills and broadsides on thin stock, with wood-engraved images, the largest 10 ½ x 8 ¼”. Six pieces mounted to an album page, the balance loose. Condition generally very good, with pinholes and contemporary marginal notes. See Extraordinary Exhibitions, p. 124, and Exemplars, p. 293. “The progeny of these edifying devices are still popular with visitors to modern museums, including the much-beloved incubator in the Museum of Science and Industry in Chicago.”