| Issue | #2 |
| Published | April-May 1973 |
| Frequency | bi-monthly |
| Cover Price | 0.20 USD |
| Pages | 36 |
| Editing | E. Nelson Bridwell |
| Characters | Supergirl; Green Lantern [Hal Jordan]; The Atom [Ray Palmer]; Superman (inset); Green Lantern [Abin Sur] (inset) |
| Genre | Superhero |
| Pencils | Nick Cardy |
| Inks | Nick Cardy |
| Characters | Superman [Kal-El; Clark Kent]; Supergirl [Kara Zor-El] (introduction, first appearance, origin); Zor-El (introduction, flashback); Miss Hart (introduction); Superboy (on a poster) |
| Synopsis | Superman spies a crashing rocket and discovers his cousin Supergirl. She tells him how Argo City survived the destruction of Krypton and how her father sent her to Earth when the inhabitants of Argo City were threatened by Kryptonite poisoning. Superman sets her up in Midvale Orphanage so she can adjust to life on Earth. |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | Al Plastino |
| Inks | Al Plastino |
| Editing | Mort Weisinger (original) |
| Reprinted | from Action Comics (DC, 1938 series) #252 (May 1959) |
| Characters | Supergirl |
| Synopsis | Changes in the Supergirl mythos. |
| Genre | superhero |
| Script | E. Nelson Bridwell |
| Letters | typeset |
| Characters | Green Lantern [Hal Jordan] (intro, origin); Green Lantern [Abin Sur] (intro) |
| Synopsis | Hal Jordan is selected by the power ring of Abin Sur to become a Green Lantern. |
| Genre | superhero |
| Script | John Broome |
| Pencils | Gil Kane |
| Inks | Joe Giella |
| Reprinted | from Showcase (DC, 1956 series) #22 (September-October 1959) |
| Characters | The Atom [Ray Palmer] (intro, origin); Jean Loring (intro) |
| Genre | superhero |
| Script | Gardner Fox |
| Pencils | Gil Kane |
| Inks | Murphy Anderson |
| Reprinted | From Showcase (DC, 1956 series) #34 (September-October 1961) |
| Characters | Green Lantern [Hal Jordan]; The Atom [Ray Palmer] |
| Synopsis | Green Lantern's and Atom's origins discussed. |
| Genre | superhero |
| Script | E. Nelson Bridwell |
| Letters | Typeset |