in Superboy (Williams Forlag, 1969 series) #8/1975 ([august] 1975)
in Superboy (Williams Forlag, 1969 series) #8/1975 ([august] 1975)
in Bumper Western Album (K. G. Murray, 1976 series) #73 ([Circa 1979-1980])Letters are from Mike W. Barr, Akron, Ohio (probably the comic scripter who was first published by DC a few years later); Richard H. Morrissey, Framingham, Mass (who contributed much information to the GCD prior to his death); and David Dasch, Brooklyn, N.Y. Letters are answered by "E.N.B."