Inks (Sheldon Moldoff) credited by Bob Bailey, 2005-01-30. Inks previously credited to George Klein. (Per Sandell ed.)
Story done before John F. Kennedy's death. Originally intended for Superman (1939) #168, April 1964 (February 1964 release date, January 1964 print date), but was pulled off the schedule when President Kennedy was assassinated in late November 1963. Published afterwards by request of President Johnson. (Parts of notes by Bob Bailey, 2005-01-30) (Per Sandell ed.)
time-travel story; NOT an imaginary story, despite cover blurb