| Issue | #99 |
| Published | April 1978 |
| Frequency | monthly |
| Cover Price | 0.35 USD |
| Pages | 36 |
| Editing | Joe Orlando (Managing Editor); Vince Colletta (Art Director) |
| Characters | Justice Society of America [JSA; Power Girl; Green Lantern [Alan Scott]; The Flash [Jay Garrick]]; Brain Wave (villain) |
| Genre | superhero |
| Pencils | Joe Staton (signed) |
| Inks | Dick Giordano (signed) |
| Characters | Justice Society of America [JSA; Power Girl; The Flash [Jay Garrick] (guest star); Green Lantern [Alan Scott] (guest star)]; Brain Wave (villain); Dr. Ginsberg; Andrew Vinson |
| Genre | superhero |
| Script | Paul Levitz |
| Pencils | Joe Staton |
| Inks | Dick Giordano |
| Colors | Adrienne Roy |
| Letters | Shelly Leferman |
| Notes | Story continued from Showcase (DC, 1977 series) #98. Power Girl continues in the Justice Society of America feature in All-Star Comics (DC, 1976 series) #72. |
| Script | Paul Levitz |
| Pencils | Joe Staton (signed); Joe Orlando (signed) |
| Inks | Joe Staton (signed); Joe Orlando (signed) |
| Letters | typeset |
| Notes | An explanation of the creation of the character Andrew Vinson based on fan Jeff Kapalka at New York's Creation Comic Convention, including sketches of Andrew Vinson by Joe Staton and Joe Orlando. |