Originally credited to Weisbecker (Clem) on pencils and Gil Kane (Pen) on art. Clem is most probably pen name for Clem Weisbecker.
"Pen" is a pen name for Pen Shomaker according to Jerry Bails' Who's Who.
Both are credited on this feature by Jerry Bails' Who's Who, but only on ink.
Which one is the penciler and which one the inker here is uncertain. Looks more like Irv Novick.
All art originally credited to Weisbecker, but Jerry Bails' Who's Who has PEN as the pen name of Pen Shumaker.