What coin was Melish responsible for was issued to mark the 100th anniversary of Cleveland?
Thomas G. Melish:  In the 1930s, Melish was responsible for two United States commemorative coin issues, the Cincinnati Musical Center half dollar and the Cleveland Centennial half dollar. Cleveland Centennial half dollar:  Sometimes known as the Cleveland Centennial Great Lakes Exposition half dollar, it was issued to mark the 100th anniversary of Cleveland, Ohio, as an incorporated city, and in commemoration of the Great Lakes Exposition, held in Cleveland in 1936.
Cleveland Centennial Great Lakes Exposition half dollar