1022 - Adventure Comics 305 - The Secret of the Mystery LEgionnaire!

Index Number – 1022 - 1.0
Issue – Adventure Comics 305
Cover Date – February 1963
Title – The Secret of the Mystery Legionnaire!
Characters – Bouncing Boy, Brainiac 5, Colossal Boy; Cosmic Boy, Lightning Lad; Mon-El, Saturn Girl, Shrinking Violet, Sun Boy, Superboy
Synopsis – After Brainiac 5 develops a permanent cure for Mon-El, he joins the Legion in disguise as Marvel Lad.
Writer – Jerry Seigel
Artist – John Forte
Editor – Mort Weisinger
Reprinted – Legion of Super-Heroes Archive 1 – 1991
Showcase Presents the Legion of Super-Heroes 1 - 2007
Comments – This issue includes a story titled, “Clark Kent, He-Man!” which features a cameo from Chameleon Boy.