The only method of advertising known to the ancients was the word of mouth. The merchant who had wares to offer brought them to the gate of a city and there cried aloud, making the worth of his goods known to those who were entering the city, and who might be induced to turn aside and purchase them…. As soon as printed symbols were invented the advertising man made use of them to give publicity to his merchandise. We find advertisements engraved on walls and tombs, written on parchment and papyrus, and printed by the first printing presses. …. Postells, painted signs, street-car placards, booklets, calendars, almanacs, handbills, magazine and newspaper advertising have now become forms of advertising so well established that we look upon them as a necessity, and are surprised to learn that most of them are modern innovations…. The first advertisement printed in English appeared in the Imperial Intelligencer in March, 1648. Advertising in magazines was not begun until comparatively recent times. For instance, the first advertisement appeared in Harper's Magazine in 1864.