Data courtesy of the Grand Comics Database under Creative Commons license.

Issue Details

Issue	#310
Published	July 1963
Cover Price	0.12 USD
Pages	36
Editing	Mort Weisinger
Notes	Letter column has letter from Edmond Hamilton. Reader suggestions for new Legionnaires include Duplicate Boy and Spider Lass

Cover Details - "When Krypto Became Superboy's Master!"

Characters	Superboy; Krypto; Lana Lang
Genre	superhero
Pencils	Curt Swan
Inks	George Klein
Letters	Ira Schnapp
Notes	Letter column has letter from Edmond Hamilton. Reader suggestions for new Legionnaires include Duplicate Boy and Spider Lass

8 page Tales of the Legion of Super-Heroes story "Part I: The Doom of the Super-Heroes!"

Characters	Legion of Super-Heroes [Cosmic Boy; Saturn Girl; Bouncing Boy; Chameleon Boy; Triplicate Girl (cameo); Brainiac 5; Star Boy (cameo); Superboy; Ultra Boy; Colossal Boy (cameo); Element Lad (cameo); Invisible Kid; Lightning Lass; Sun Boy; Shrinking Violet]; Mxyzptlk V [as Mask Man]
Synopsis	The Legion confronts a masked raider looting Metropolis, who turns out to be deadly, killing several of the Legionnaires.
Genre	superhero
Script	Edmond Hamilton
Pencils	John Forte
Inks	John Forte
Letters	Milton Snapinn
Editing	Mort Weisinger
Notes	Ultra-Boy, Shrinking Violet, Chameleon Boy die. Triplicate Girl, Element Lad, and Phantom Girl die off screen
Reprinted	in Adventure Comics (DC, 1938 series) #500; in Legion of Super-Heroes Archives, The (DC, 1991 series) #2

1 page public service announcement "A Tree Grows on Second Street"

Script	Jack Schiff
Pencils	Sheldon Moldoff
Inks	Sheldon Moldoff
Letters	Joe Letterese

7 page Tales of the Legion of Super-Heroes story "Part II: Last Stand of the Legion!"

Characters	Legion of Super-Heroes [Superboy; Colossal Boy; Invisible Kid; Saturn Girl; Bouncing Boy; Sun Boy; Mon-El; Cosmic Boy; Colossal Boy; Brainiac 5; Lightning Lass]; Mxyzptlk V [as Mask Man]
Synopsis	Superboy figures out Mask Man's identity and returns him to the 5th Dimension, restoring to life all the Legionnaires.
Genre	superhero
Script	Edmond Hamilton
Pencils	John Forte
Inks	John Forte
Letters	Milton Snapinn
Editing	Mort Weisinger
Notes	Colossal Boy, Cosmic Boy, Invisible Kid, Brainiac 5, Saturn Girl, Lightning Lass, Mon-El die. All are restored.
Reprinted	in Adventure Comics (DC, 1938 series) #500; in Legion of Super-Heroes Archives, The (DC, 1991 series) #2

Half page Little Pete filler "untitled"

Characters	Little Pete
Synopsis	Little Pete writes a composition about the fact that it is raining.
Genre	gag
Script	Henry Boltinoff
Pencils	Henry Boltinoff
Inks	Henry Boltinoff
Letters	Henry Boltinoff

8 page Superboy story "When Krypto Was Superboy's Master!"

Characters	Superboy; Krypto; Lana Lang; Prof Lang
Synopsis	Superboy and Krypto exchange minds
Genre	superhero
Script	George Kashdan
Pencils	George Papp
Inks	George Papp
Letters	Joe Letterese
Editing	Mort Weisinger
Reprinted	in Action Comics (DC, 1938 series) #403 (August 1971)