| 0 | - | cover | 1 | letters: typeset | Harry S. Truman |
| 1 | A Letter from the Publisher | text article | 1 | script: ? [as Ted Charlton] (credited); pencils: ? (photograph); inks: ? (photograph); letters: typeset | |
| 2 | The Submarine | comic story | 6 | pencils: Bob Sanders; inks: Bob Sanders | |
| 3 | Enemy of Aviation | comic story | 4 | | |
| 4 | Mapping the Moon | comic story | 2 | | |
| 5 | Radio Progress | comic story | 5 | pencils: Bob Sanders; inks: Bob Sanders | President Franklin Delano Roosevelt; Gugliemo Marconi; Harold Arlin; Wm. Jennings Bryan; Amos 'n Andy [Amos [Correll]; Andy [Gosden]]; Will Rogers; Clara, Lu 'n' Em [Isobel Starkey; Helen King; Isobel Carrother]; Fannie Hurst; Ted Husing; Graham McNamee; Eddie Cantor; Floyd Gibbons; Fibber McGee and |
| 6 | Wax Sculpture Master | comic story | 6 | | |
| 7 | A Trip to the Moon Soon? | text article | 2 | letters: typeset | |
| 8 | Scientific Wonders | comic story | 1 | | |
| 9 | Precipitron: Fights Dust and Infections! | comic story | 4 | | |
| 10 | "Potato Patch" Plane | comic story | 4 | pencils: Howard Larsen; inks: Howard Larsen | |
| 11 | How to Make a Camera and Periscope | comic story | 4 | pencils: HCB; inks: HCB | |
| 12 | Home Experiments | comic story | 2 | pencils: Bob Sanders; inks: Bob Sanders | |
| 13 | Highways That Speak | comic story | 3 | pencils: Bob Sanders; inks: Bob Sanders | |
| 14 | Death... to the Insects! | comic story | 4 | | |
| 15 | Odd Inventions | comic story | 1 | | |
| 16 | Sun Completely Covered by the Moon During a Total Eclipse | photo story | 1 | pencils: ? (photograph); inks: ? (photograph); letters: typeset | |