| 0 | - | cover | 1 | pencils: Greg Staples; inks: Greg Staples; colors: Greg Staples | Leonard Brown, Anthony Dunn, Dynamo, John Janus, Menthor, NoMan |
| 1 | - | blank page(s) | 1 | | |
| 2 | Title Page & Credits | credits, title page | 2 | pencils: Wally Wood, Gil Kane, Dan Adkins; inks: Wally Wood, Mike Esposito | John Adkins, Leonard Brown, Dynamite, Dynamo, Virgil "Guy" Gilbert, John Janus, Kitten, Menthor, Weed, William Wylie |
| 3 | - | table of contents | 1 | letters: typeset | |
| 4 | - | cover reprint (on interior page) | 1 | pencils: Wally Wood; inks: Wally Wood | Leonard Brown, Anthony Dunn, Dynamo, John Janus, Menthor, NoMan |
| 5 | First Encounter! | comic story | 4 | script: Len Brown; pencils: Wally Wood; inks: Wally Wood; letters: Victor Gorelick | T.H.U.N.D.E.R. Agents; Professor Jennings (first appearance, death) |
| 6 | Menace of the Iron Fog | comic story | 12 | script: Len Brown; pencils: Wally Wood; inks: Wally Wood; letters: Victor Gorelick | Leonard Brown Origin, Dynamo Origin, Iron Maiden, Rusty |
| 7 | T.H.U.N.D.E.R. Agent NoMan | comic story | 10 | script: Larry Ivie; pencils: Reed Crandall; inks: Reed Crandall | Anthony Dunn Origin, NoMan Origin |
| 8 | Face to Face | text story | 2 | script: Larry Ivie | Anthony Dunn, NoMan |
| 9 | The Enemy Within! | comic story | 12 | script: Lou Silverstone; pencils: Gil Kane, George Tuska; inks: Mike Esposito; letters: Gaspar Saladino | John Janus Origin, Menthor Origin |
| 10 | - | comic story | 10 | script: Larry Ivie; pencils: Mike Sekowsky; inks: Frank Giacoia | John Adkins, James Angor, Dynamite, Egghead, Virgil "Guy" Gilbert, Kitten, Weed, William Wylie |
| 11 | At the Mercy of the Iron Maiden | comic story | 10 | script: Wally Wood, Dan Adkins; pencils: Wally Wood; inks: Dan Adkins | John Adkins, James Angor, Leonard Brown, Anthony Dunn, Dynamite, Dynamo, Egghead, Virgil "Guy" Gilbert, Iron Maiden, John Janus, Kitten, Menthor, NoMan, Rusty |
| 12 | The Greatest Fight of All Time! | cover reprint (on interior page) | 1 | pencils: Wally Wood; inks: Wally Wood | Leonard Brown, Dynamo |
| 13 | Dynamo Battles Dynavac | comic story | 13 | script: Len Brown; pencils: Wally Wood; inks: Wally Wood | Leonard Brown, Dynamo, Iron Maiden, Rusty |
| 14 | In the Warlord's Power! | comic story | 10 | script: Bill Pearson; pencils: Dick Ayers; inks: Wally Wood | Anthony Dunn, NoMan |
| 15 | - | comic story | 10 | script: Lou Silverstone; pencils: Mike Sekowsky; inks: Frank Giacoia | John Janus, Menthor |
| 16 | D-Day for Dynamo! | comic story | 13 | script: Len Brown; pencils: Wally Wood; inks: Wally Wood | Leonard Brown, Dynamo, Iron Maiden, Rusty |
| 17 | Junior T.H.U.N.D.E.R. Agents | text story | 2 | script: Lou Silverstone; pencils: Mike Sekowsky; inks: Frank Giacoia | |
| 18 | On the Double! | comic story | 10 | script: Lou Silverstone; pencils: Mike Sekowsky; inks: Frank Giacoia | John Adkins, James Angor Death, Dynamite, Egghead Death, Virgil "Guy" Gilbert, Kitten, Weed, William Wylie |
| 19 | Dynamo vs. Menthor | cover reprint (on interior page) | 1 | pencils: Wally Wood; inks: Wally Wood | Leonard Brown, Anthony Dunn, Dynamo, John Janus, Kitten, Menthor, NoMan |
| 20 | Dynamo Battles the Subterraneans | comic story | 10 | pencils: Wally Wood; inks: Wally Wood | |
| 21 | Dynamo | illustration | 1 | pencils: Wally Wood; inks: Wally Wood | |
| 22 | Noman Faces the Threat of the Amazing Vibraman | comic story | 10 | script: Bill Pearson; pencils: John Giunta; inks: Wally Wood | |
| 23 | NoMan | illustration | 1 | pencils: Wally Wood; inks: Wally Wood | |
| 24 | The Menace of the Red Dragon | comic story | 10 | pencils: Wally Wood; inks: Dan Adkins | |
| 25 | The T.H.U.N.D.E.R. Belt | illustration | 1 | pencils: Wally Wood; inks: Wally Wood | |
| 26 | T.H.U.N.D.E.R. Squad | character profile | 1 | pencils: Dan Adkins; inks: Dan Adkins, Wally Wood | John Adkins, Dynamite, Virgil "Guy" Gilbert, Kitten, Weed, William Wylie |
| 27 | Menthor | illustration | 1 | pencils: Wally Wood; inks: Wally Wood | |
| 28 | Invaders from the Deep | comic story | 10 | script: Lou Silverstone; pencils: Mike Sekowsky; inks: Frank Giacoia | |
| 29 | Dynamo vs. Menthor | comic story | 10 | script: Lou Silverstone; pencils: Wally Wood; inks: Dan Adkins | |
| 30 | - | cover reprint (on interior page) | 1 | pencils: Reed Crandall; inks: Wally Wood | Leonard Brown, Dynamo, Iron Maiden, Rusty |
| 31 | Master of Evolution | comic story | 12 | script: Len Brown; pencils: Dan Adkins, Wally Wood; inks: Wally Wood | Dr. Sparta (first appearance) |
| 32 | The Synthetic Stand-Ins | comic story | 10 | script: Steve Skeates; pencils: Mike Sekowsky; inks: Frank Giacoia | |
| 33 | NoMan in Action | illustration | 1 | pencils: Wally Wood; inks: Wally Wood | |
| 34 | The Origin of T.H.U.N.D.E.R. | comic story | 1 | pencils: Wally Wood; inks: Wally Wood | T.H.U.N.D.E.R. (origin) |
| 35 | The Deadly Dust | comic story | 10 | script: Steve Skeates; pencils: Mike Sekowsky; inks: Frank Giacoia | |
| 36 | The Return of the Iron Maiden | comic story | 10 | pencils: Reed Crandall; inks: Wally Wood | John Adkins, Dynamite, Virgil "Guy" Gilbert, Weed, William Wylie |
| 37 | The Great Hypno | comic story | 11 | script: Lou Silverstone; pencils: John Giunta; inks: Dan Adkins | |
| 38 | T.H.U.N.D.E.R. is Back! | promo (ad from the publisher) | 1 | pencils: Jerry Ordway; inks: Jerry Ordway; colors: David Baron | Leonard Brown, Anthony Dunn, Dynamo, Virgil "Guy" Gilbert, Iron Maiden, John Janus, Lightning, Menthor, NoMan, Rusty |
| 39 | - | blank page(s) | 1 | | |
| 40 | - | promo (ad from the publisher) | 1 | pencils: Mike Sekowsky, John Giunta; inks: Frank Giacoia, Wally Wood | John Adkins, James Angor, Anthony Dunn, Dynamite, Egghead, Virgil "Guy" Gilbert, Kitten, NoMan, Weed, William Wylie |