| 0 | The Legion Mutiny! | cover | 1 | pencils: Ross Andru, Howard Bender; inks: Pablo Marcos, Joe Rubinstein; letters: Gaspar Saladino | Imra Ardeen, Bouncing Boy, Brainiac 5, Chameleon Boy, Cosmic Boy, Reep Daggle, Luornu Durgo, Clark Kent, Rokk Krinn, Lightning Lad, Dirk Morgna, Night Girl, Garth Ranzz, Saturn Girl |
| 1 | Adventure Comics No. 503 | table of contents | 1 | script: Nicola Cuti | |
| 2 | The Mutiny of the Legionnaires! Part I | comic story | 9 | script: Edmond Hamilton; pencils: John Forte; inks: John Forte; letters: Milt Snapinn; editing: Mort Weisinger | Cosmic Boy, Luornu Durgo, Thom Kallor, Tenzil Kem, Rokk Krinn, Light Lass, Lightning Lad, Matter-Eater Lad, Dirk Morgna, Ayla Ranzz, Garth Ranzz, Star Boy, Sun Boy, The Time Trapper |
| 3 | Part II: The Castaway Legionnaires! | comic story | 9 | script: Edmond Hamilton; pencils: John Forte; inks: Sheldon Moldoff; letters: Milt Snapinn; editing: Mort Weisinger | Cosmic Boy, Luornu Durgo, Thom Kallor, Tenzil Kem, Rokk Krinn, Light Lass, Lightning Lad, Matter-Eater Lad, Dirk Morgna, Ayla Ranzz, Garth Ranzz, Star Boy, Sun Boy, Triplicate Girl |
| 4 | Brickface the Wall-to-Wall Killer | comic story | 9 | script: Martin Pasko; pencils: Joe Staton; inks: Bob Smith; colors: Glynis Wein; letters: Ben Oda; editing: Len Wein | Chief Branner, Eel O'Brian, Plastic Man, Woozy Winks |
| 5 | The Big Pull | comic story | 16 | script: Steve Skeates; pencils: Jim Aparo; inks: Jim Aparo; letters: Jim Aparo; editing: Dick Giordano | Aqualad, Garth, Mera, Ocean Master, Aquaman, Arthur Curry, Orm Marius |
| 6 | The Traders' Trap! | comic story | 14 | script: Steve Skeates; pencils: Jim Aparo; inks: Jim Aparo; letters: Jim Aparo; editing: Dick Giordano | Mera, Nuidis Vulko, Aquaman, Arthur Curry |
| 7 | The Tower of the Dead! | comic story | 7 | script: Len Wein; pencils: Gray Morrow; inks: Gray Morrow; letters: Ben Oda; editing: Joe Orlando | Zatanna, Jeff Sloane |
| 8 | Kill-- or Be Killed | comic story | 7 | script: Len Wein; pencils: Gray Morrow; inks: Gray Morrow; letters: Ben Oda; editing: Joe Orlando | Zatara, Zatanna, Allura, Jeff Sloane |
| 9 | The Story of the Newsboy Legion | comic story | 13 | script: Joe Simon, Jack Kirby; pencils: Jack Kirby; inks: Joe Simon; letters: Howard Ferguson; editing: Whitney Ellsworth | Big Words, Gabby, The Guardian, Jim Harper, Scrapper, Tommy |
| 10 | Elastic Lad Jimmy and His Legion Romances! | comic story | 9 | script: Jerry Siegel; pencils: John Forte; inks: John Forte; letters: Joe Letterese; editing: Mort Weisinger | Imra Ardeen, Luornu Durgo, Elastic Lad, Lucy Lane, Light Lass, Dirk Morgna, Jo Nah, Jimmy Olsen, Ayla Ranzz, Saturn Girl, Sun Boy, Triplicate Girl, Ultra Boy |
| 11 | New Comics #1 cover | cover reprint (on interior page) | 1 | pencils: Vin Sullivan; inks: Vin Sullivan; editing: Malcolm Wheeler-Nicholson | |
| 12 | New Adventure Comics #12 cover | cover reprint (on interior page) | 1 | pencils: Whitney Ellsworth; inks: Whitney Ellsworth; editing: Malcolm Wheeler-Nicholson | |
| 13 | New Adventure Comics #15 cover | cover reprint (on interior page) | 1 | pencils: Creig Flessel; inks: Creig Flessel; editing: Malcolm Wheeler-Nicholson | |
| 14 | The Story Behind the Stories | text article | 1 | script: Paul Levitz | |
| 15 | 100 Pages of Thrills! | promo (ad from the publisher) | 1 | script: Nicola Cuti; pencils: Howard Bender; inks: Pablo Marcos; letters: Gaspar Saladino | |