in Superman (Egmont Ehapa, 1966 series) #21/1969 (18.Oktober 1969)
in Superman (Egmont Ehapa, 1966 series) #21/1969 (18.Oktober 1969), #21/1969 (18.Oktober 1969)
in Supermann (Williams Forlag, 1969 series) #4/1970 ([februar] 1970)Story is in two parts:
"Superman's Secret Past" 9 pages
"The Super Son's Super Fun" 6 pages
Letters of comment from Ira Rasof, Paul Johnson, Jim Hartley, Johnny Province, M. K. Tomashevsky and George Suarez.
from Action Comics (DC, 1938 series) #273 (February 1961)