Frank Pierson?s Spirit Clock Dial. New York: Martinka & Co. [?], ca. 1900. Glass clock dial with metal pointer stops on numbers called out by the audience, reveals selected cards, or a chosen number. Unique example, owned and used by Frank Pierson, and accompanied by a photograph of the clock in use in later years, and a small scrapbook kept by Pierson regarding his career as a magician dating to the late nineteenth century. With wooden packing boxes for pointer and dial. A handsome example. Pierson, a founding member of the Society of American Magicians, lived in New Jersey, and performed in the surrounding area for most of his career. A frequent customer of the Martinka brothers, he presented magic and shadowgraphs in his show. The photograph accompanying this clock shows it in use in later years; Pierson died in 1925.