Captain Thunder is obviously based on Fawcett's Captain Marvel, who had had his own DC comic for a year when this issue was published (Shazam!). DC didn't introduce Captain Marvel into the main DC universe until December 1976, in issue 137 of Justice League of America.
in Superman (Egmont Ehapa, 1966 series) #2/1975 (18. Januar 1975)
in Supermann (Williams Forlag, 1969 series) #6/1975 ([juni] 1975)Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [August 2007]
in Superman (Egmont Ehapa, 1966 series) #2/1975 (18. Januar 1975)
in Supermann (Williams Forlag, 1969 series) #6/1975 ([juni] 1975)
in The Best of DC (DC, 1979 series) #16 (September 1981)
in Superman in the Seventies (DC, 2000 series) #[nn] ([October] 2000)
in Shazam! The Greatest Stories Ever Told (DC, 2008 series) #[nn] (2008)Includes reference to crediting the artwork in "Mr. Mxyzplk Returns" in Superman #272 to John Sikela based on info from Jerry Bails.