"Superman" was the first DC title with a letters column as a regular feature beginning with issue #124 (September 1958). In the view of comics historian Les Daniels, artist Curt Swan became the definitive artist of Superman in the early 1960s with a "new look" to the character that replaced Wayne Boring's version. Writer Jim Shooter and Swan crafted the story "Superman's Race With the Flash!" in "Superman" #199 (Aug. 1967) which featured the first race between the Flash and Superman, two characters known for their super-speed powers.