Day at the Circus (1901)

Day at the Circus is a 1901 American silent film produced and distributed by Edison Manufacturing Company and directed by Edwin S. Porter. It depicts a parade of the Great Forepaugh and Sells Bros. Combined Circus followed by a horse race in the tent. It was one of many early silent film documentaries depicting circuses, which historian Katherine H. Adams said, "The circus' emphasis on movement and quick transition, as well as its lack of dialogue, made it a perfect subject matter for silent film."

More at Wikipedia.