Fate of the Key This addendum concludes our series “Opening Day of the World’s Fair,” which explores the events of May 1, 1893, at the World’s Columbian Exposition in Chicago. The full series can be found here. “Electric Button” stereoscope card photograph. [Image (colorized) from the New York Public Library Digital Archive.] An advertisement for Kirk’s American Family Soap, showing Director-General Davis, the Duke of Veragua, and President Grover Cleveland (and possibly the arm of Mayor Harrison?) [...]