| 0 | Cave Carson Adventures Inside Earth | cover | 1 | pencils: Bruno Premiani; inks: Bruno Premiani; letters: Ira Schnapp | Cave Carson First, Christie Madison First, Bulldozer Smith First |
| 2 | The Secret Beneath the Earth, Chapter 1 | comic story | 9.67 | script: Ed Herron; pencils: Bruno Premiani; inks: Bruno Premiani; letters: Stan Starkman | Cave Carson First, Christie Madison First, Bulldozer Smith First |
| 3 | Your Passport to Amazing Adventures! | promo (ad from the publisher) | 0.33 | pencils: Dick Dillin, Murphy Anderson; inks: Sheldon Moldoff, Murphy Anderson; letters: Ira Schnapp | |
| 4 | Presenting the Greatest Superman Stories Ever Told! | promo (ad from the publisher) | 1 | pencils: Curt Swan; inks: George Klein; letters: Ira Schnapp | Superbaby, Superman, Clark Kent |
| 5 | Spelunking around the World | comic story | 2 | pencils: Bernard Baily; inks: Bernard Baily; letters: Ira Schnapp | |
| 6 | The Incredible Lava Creature, Chapter 2 | comic story | 7.67 | script: Ed Herron; pencils: Bruno Premiani; inks: Bruno Premiani; letters: Stan Starkman | Cave Carson First, Christie Madison First, Bulldozer Smith First |
| 8 | Superman Says... "Lend a Friendly Hand!" | public service announcement | 1 | script: Jack Schiff; pencils: Curt Swan; inks: Stan Kaye; letters: Ira Schnapp | Clark Kent, Superman |
| 9 | Strange Secrets of Inner Space | text article | 1 | letters: typeset | |
| 10 | The Magnetic Monster, Chapter 3 | comic story | 6.67 | script: Ed Herron; pencils: Bruno Premiani; inks: Bruno Premiani; letters: Stan Starkman | Cave Carson First, Christie Madison First, Bulldozer Smith First |
| 11 | - | promo (ad from the publisher) | 0.33 | script: ? (promo copy); pencils: ? (cover thumbnails); inks: ? (cover thumbnails); colors: ? (cover thumbnails) | |