Adventure Comics (1938 1st Series) #321 FN
Published Jun 1964 by DC.
Cover pencils by Curt Swan, inks by George Klein. The Code of the Legion--Tales of the Legion of Super-Heroes, script by Edmond Hamilton, pencils by John Forte, inks by Sheldon Moldoff and Al Plastino (Superboy face on splash only); The Legionnaires submit to tests of their ability to keep secret their greatest weapon from Commissioner Wilson. Chief Hot Foot humor page by Henry Boltinoff. Clark Kent, Cub Reporter starring Superboy, art by John Sikela. Letter to the editor from comic writer Bob Rozakis. 36 Pages, Full Color. Cover price $0.12.