| Issue | #290 |
| Published | July 1962 |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Mort Weisinger |
| Characters | Superman; Lois Lane |
| Genre | superhero |
| Pencils | Curt Swan; Kurt Schaffenberger (Lois Lane figure touch-up) |
| Inks | George Klein |
| Notes | Kurt Schaffenberger Lois Lane touch-up pencil credit from Robert Cooley (May 13, 2005). |
| Reprinted | in Showcase Presents Superman (DC, 2005 series) #3 |
| Characters | Superman; Lois Lane; Jimmy Olsen; Perry White; Krypto; Fortress of Solitude; Kandor; Red Kryptonite |
| Synopsis | Red Kryptonite causes Superman's left side, and Krypto's right side, to become vulnerable. |
| Genre | superhero |
| Pencils | Curt Swan |
| Inks | George Klein |
| Reprinted | in Showcase Presents Superman (DC, 2005 series) #3 |
| Genre | gag |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |
| Genre | gag |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |
| Characters | Phantom Girl; Cosmic Boy (figurine); Saturn Girl (figurine); Lightning Lad (figurine) (all as the Legion of Super-Heroes); Supergirl; Jerro; Dick Malverne; Kandor; Fortress of Solitude; Red Kryptonite; Edna Danvers; Lori Lemaris; The Supergirl Emergency Squad (intro) |
| Genre | superhero |
| Script | Jerry Siegel |
| Pencils | Jim Mooney |
| Inks | Jim Mooney |
| Reprinted | in Action Comics (DC, 1938 series) #347 (March 1967); in Showcase Presents: Supergirl (DC, 2007 series) #2 |