Lighting ``A Century of Progress´´

Since the Columbian Exposition at Chicago in 1893 gave to the world its first large outdoor display, electric illumination has played a vital and striking part in the great expositions. At San Francisco in 1915 the illumination was classed by the International Jury of Award as a ``Decorative Art´´; at Chicago in 1933 the lighting was conceded to be an outstanding feature of the exposition in spite of the fact that it was almost an afterthought. In this short article the author gives a general description of the exterior lighting effects; illustrates some of the equipment used and the results obtained. ??Editor.