 In 1901, Cleveland architect John Eisenmann was commissioned to design an exhibition hall for his state at the Pan-American Exposition in Buffalo, New York. He developed a distinctive flag to fly over each corner of the Ohio Building. The wool flags officially represented the Ohio Pan-American Exposition Commission rather than the state. On July 18, Governor George K. Nash visited the exposition, where he was presented with one of the flags, which is now held in the Ohio History Connection collections. Eisenmann secured a U.S. design patent for his design, which he described as "a triangular forked or swallow-tailed flag corresponding to the shape generally known as a 'cavalry-guidon' or 'broad pennant.'"
