When President Benjamin Harrison signed the law admitting Idaho as a U.S. state on July 3, 1890, the population was 88,548. Designed by Jan Crook, this is a colour modification of the Black Watch and approved by the Idaho Centennial Commission as the official Idaho tartan. The Lasting Legacy Committee of the Centennial Commission also made mention of a ''Mr John McEwing who contributed so much to the heritage of the Scots in Idaho.'