He wrote comic books in the 1940s, including horror stories for "Adventures Into the Unknown" (ACG). Long contributed several original scripts to this comic's early issues, as well as an adaptation of Walpole's "The Castle of Otranto". He authored scripts for "Planet Comics", "Superman", "Congo Bill", DC's Golden Age "Green Lantern", and the Fawcett Comics "Captain Marvel". He worked in the 1940s as a script-reader for Twentieth Century Fox Long wrote crime and weird menace stories for "Ten Gang Mystery" and other magazines.