hint submitted by Michael Keating of Florissant, Missouri
Showcase Presents: Supergirl (DC, 2007 series) #1 credits inks to George Klein.
First panel has been altered to replace "Superman's Pal Jimmy Olsen" logo with "Supergirl" logo, also to add text box "A Hall of Fame Classic" and replace wording in long opening caption.
Published in cooperation with the National Social Welfare Assembly.
Previously appeared in DC comics cover-dated October 1951 and October 1958.
letters submitted by Dave Cockrum; Ray Hyatt; Larry L. Miller; Anna Battenhouse; Gregory Kozlowski; Richard Morton