Abstract :
Each of the great American expositions has marked progressive advances in the field of artificial illumination. Chicago´s Columbian Exposition of 1893 startled the world with its wide use of the then-novel incandescent lamp. In 1915 the Panama-Pacific Exposition in San Francisco eached new levels in the use of exterior floodlighting. Chicago´s Century of Progress showed further advances, particularly in the field of color. But it is safe to say that the current expositions employ a wider variety of new illumints, equipments, and installations than all their predecesors combined. The Golden Gate International Exposition frnishes dramatic proof of such advances; and because the problems involved are applicable to all building design, description of its principal features seems worthwhile.
