From Eric Beheim

Tiger 1940, originally uploaded by bucklesw1. During the 1939-1940 New York World’s Fair, Kodak offered what it referred to as “the greatest show of color photography on earth.” Eleven custom-built, water-cooled slide projectors, each weighing more than a ton, simultaneously projected eleven 35mm Kodachrome slides side by side onto a huge curved screen 22 feet high and 187 feet in width. The eleven projectors were connected to each other through an elaborate electric interlock system that automatically changed the slides in synchronization with a prerecorded music and narration soundtrack. 2,112 slides were shown during a 12-minute "Cavalcade of Color" presentation that was repeated continuously from twelve noon until ten at night inside the Eastman Kodak Building on the fairgrounds. The accompanying photo was used to illustrate a Kodak promotional piece for its 1940 version of the color slide show. According to this piece, the show included “scores of exciting in-the-cage shots of the great “cats” of Ringling Bros.-Barnum & Bailey Circus [and] a series of the beloved clowns.” (If the "scores of exciting in-the-cage shots" were taken in 1940, then the “great cats” would be those of Alfred Court.) I have no information as to what happened to all these slides after the Fair closed. If Kodak kept them, then there is a good chance that they ended up in the George Eastman House Museum in Rochester. (Since they were all shot on Kodachrome, the colors would be just as bright and fresh today as when they were taken 69 years ago.) I seem to recall that Emmett Kelly later appeared in Kodak advertising in the 1960s.