This issue reprints the following "Captain Atom" stories:
SPACE ADVENTURES / VOLUME 3, NUMBER 33 / MARCH 1960 / INTRODUCING CAPTAIN ATOM (THE ORIGIN)
SPACE ADVENTURES / VOLUME 3, NUMBER 34 / JUNE 1960 / THE 2ND MAN IN SPACE
SPACE ADVENTURES / VOLUME 3, NUMBER 36 / OCTOBER 1960 / ON PLANET X
Some color changes were made from the ORIGINAL issues to the reprints. In the original issue, Captain Atom's costume was blue even though on the COVER it was yellow. The reprint fixed this inconsistency and the blue costume was changed to yellow.
In the ORIGINAL issues, Steve Ditko isn't given any credit that is VISIBLE. In the reprints here, his name is penciled in several places.