| Issue | #350 |
| Published | November 1966 |
| Cover Price | 0.12 |
| Pages | 36 |
| Editing | Mort Weisinger |
| Characters | Legion of Super-Heroes [Supergirl; Superboy; Saturn Girl; Lightning Lad; Cosmic Boy; Light Lass; Phantom Girl; Ultra Boy; Shrinking Violet; Colossal Boy] |
| Genre | superhero |
| Pencils | Curt Swan |
| Inks | George Klein |
| Letters | Ira Schnapp |
| Reprinted | in Legion of Super-Heroes Archives, The (DC, 1991 series) #6 |
| Characters | Legion of Super-Heroes (Superboy, Supergirl, Invisible Kid, Saturn Girl, Chameleon Boy, Shrinking Violet, Colossal Boy, Brainiac 5, Sun Boy, Mon-El, Ultra Boy, Element Lad, Matter-Eater Lad, Cosmic Boy, Light Lass, Phantom Girl, Duo Damsel, Karate Kid); intro White Witch, RJ Brande; green kryptonite; a model of Computo |
| Synopsis | Superboy and Supergirl resign due to a Kryptonite cloud, and are replaced by Sir Prize and Miss Terious who help fight the Devil's Dozen. |
| Genre | superhero |
| Script | E. Nelson Bridwell |
| Pencils | Curt Swan |
| Inks | George Klein |
| Letters | Milton Snapinn |
| Editing | Mort Weisinger |
| Notes | part 1 of 2 |
| Reprinted | in Superboy (DC, 1949 series) #205; in Legion of Super-Heroes Archives, The (DC, 1991 series) #6 |
| Genre | superhero |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |