The price has been removed from the original, and the number got moved next to the month (should be underneath).
In this issue, Stan Kaye is credited as the cover inker. DC Silver Age Classics Action Comics 252 (DC, 1992 series) also lists Kaye as the inker. Other sources credit Al Plastino, who is currently credited in the GCD's index of the original printing.
An overview of the context of this issue and the character, and credits. Appears on insides of front and back covers.
Credits in this issue say "Unknown" for writer, but the corrections page in the Millennium Edition: Superboy (DC, 2001 series) #1, which was the last Millennium Edition, credits Robert Bernstein for this story.