Inker credit from GCD index for original issue. The table of contents for this collection credits Joe Giella as the sole inker for this cover.
The Pale People are later encountered in Justice League of America #90.
Spin off from the Flash strip in Flash #110. Early Kid Flash stories deal with teen-age problems as perceived by Schwartz and co. Kid Flash is also a member of the Teen Titans.
Elongated Man is a frequent guest star with Flash in his early strips. He graduates to his own strip in Detective Comics, starting in #327.