 Superman collector Danny Fuchs believes it was possible Kaan had "history confused", and that he had modeled for the Fleischer Studios animations based on Superman.An observer spotted an apparent inconsistency with Kaan's photos – one shows him on the steps of Hatch Memorial Shell in the Boston Esplanade, but this structure was not built in 1940, four years after he allegedly modeled for Shuster.Superman collector Mike Curtis believes Kaan played Superman in personal appearances and a short film for Macy’s Superman ride promotion for the Krypto Ray Gun.