| 0 | The Three Dimwits Discover a Vanishing Vitamin! | cover | 1 | pencils: E. E. Hibbard; inks: E. E. Hibbard | The Flash [Jay Garrick]; Winky Moylan; Blinky Boylan; Noddy Toylan |
| 1 | Editorial Advisory Board | promo (ad from the publisher) | 0.33 | letters: typeset | |
| 2 | Mounted Messenger by Cornelia Meigs | text article | 0.67 | letters: typeset | |
| 3 | Tumble Inn to Trouble! [Introduction] | comic story | 1 | script: Gardner Fox; pencils: E. E. Hibbard; inks: E. E. Hibbard | The Flash [Jay Garrick]; Winky Moylan; Blinky Boylan; Noddy Toylan; The Thinker [Clifford Devoe] (villain) |
| 4 | [Tumble Inn to Trouble!] Chapter One: 10 Years to Think | comic story | 12 | script: Gardner F. Fox; pencils: E. E. Hibbard; inks: E. E. Hibbard | The Flash [Jay Garrick]; Winky Moylan; Blinky Boylan; Noddy Toylan; The Thinker [Clifford Devoe] (villain, introduction); Hunk Norvock (villain) |
| 5 | Comic Cavalcade | promo (ad from the publisher) | 0.5 | letters: typeset | |
| 6 | All-Star Comics; The Justice Society of America | promo (ad from the publisher) | 0.5 | | |
| 7 | [Tumble Inn to Trouble!] Chapter Two: The Thinker against the Doer! | comic story | 14 | script: Gardner F. Fox; pencils: E. E. Hibbard; inks: E. E. Hibbard | The Flash [Jay Garrick]; Winky Moylan; Blinky Boylan; Noddy Toylan; The Thinker [Clifford Devoe] (villain) |
| 8 | The Big Eight! | promo (ad from the publisher) | 1 | | |
| 9 | Hop Harrigan in the Solomons | text story | 1.5 | script: Evelyn Gaines | Hop Harrigan |
| 10 | Picture Stories from the Bible | promo (ad from the publisher) | 0.5 | letters: typeset | |
| 12 | [Tumble Inn to Trouible!] Chapter Three: Hot Stuff, That Banana Oil | comic story | 11 | script: Gardner F. Fox; pencils: E. E. Hibbard; inks: E. E. Hibbard | The Flash [Jay Garrick]; Winky Moylan; Blinky Boylan; Noddy Toylan; The Thinker [Clifford Devoe] (villain) |
| 13 | Now You Too Can Have a Junior Justice Society Emblem! | promo (ad from the publisher) | 1 | letters: typeset | |
| 14 | Wonder Woman | promo (ad from the publisher) | 0.5 | letters: typeset | |
| 15 | Mutt & Jeff; Green Lantern | promo (ad from the publisher) | 0.5 | | |
| 16 | [Tumble Inn to Trouble!] Chapter Four: Who's the Real Thinker? | comic story | 10 | script: Gardner F. Fox; pencils: E. E. Hibbard; inks: E. E. Hibbard | The Flash [Jay Garrick]; Winky Moylan; Blinky Boylan; Noddy Toylan; The Thinker [Clifford Devoe] (villain) |