| 0 | Meet Rang-A-Tang "The Wonder Dog" | cover | 1 | pencils: Edd Ashe; inks: Edd Ashe | Rang-A-Tang (dog); Detective Hy Speed |
| 1 | Hold That Line! | comic story | 1 | script: Jack Cole; pencils: Jack Cole; inks: Jack Cole | |
| 2 | Hello | promo (ad from the publisher) | 1 | | |
| 3 | Origin of Rang-a-Tang | comic story | 6 | script: Norman Danberg; pencils: Edd Ashe; inks: Edd Ashe | Rang-A-Tang (a dog) (introduction); Hy Speed (detective, introduction); Amazing Boy [Ritchie Waters]; Blackie Blade (villain, introduction) |
| 4 | The Mexidian Raiders | comic story | 10 | script: Otto Binder, Ken Fitch; pencils: Clem Gretter; inks: Clem Gretter | Dan Hastings; Dr. Carter; Bob Carter; Gloria Carter; Europas (villain); Ursulis (villain) |
| 5 | A Bad Bargain | comic story | 5 | pencils: Bill Allison; inks: Bill Allison | Buck Stacey (range detective, introduction); Sandra Cummings (rancher); Steve Vance (villain, crooked rancher); Ben Hackerman (villain, foreman) |
| 6 | Brain-Teasers | activity | 1 | | |
| 7 | The Picnic | comic story | 2 | script: Jack Cole; pencils: Jack Cole; inks: Jack Cole | |
| 8 | The Trap | comic story | 2 | script: Dick Ryan; pencils: Dick Ryan; inks: Dick Ryan | Sugar; Honey; Huggin' (three bears); Billy Fox (Introduction, villain) |
| 9 | Secret Agent -- B.O. | comic story | 3 | script: Jack Cole; pencils: Jack Cole; inks: Jack Cole | Ima Slooth (introduction) |
| 10 | - | cartoon | 1 | script: Dick Ryan; pencils: Dick Ryan; inks: Dick Ryan | |
| 11 | The Big Fight | comic story | 2 | script: Fred Schwab; pencils: Fred Schwab; inks: Fred Schwab | Boodini (a magician / escape artist) |
| 12 | The Radium Ore Robber | comic story | 5 | pencils: Frank Frollo; inks: Frank Frollo | Jack Burk (introduction); Johnson (villain, dies) |
| 13 | Ages of Animals | text article | 1 | pencils: Richard Speed; inks: Richard Speed | |
| 14 | Down with the King | comic story | 2 | script: George Nagle; pencils: Jack Cole; inks: Jack Cole | King Kole |
| 15 | Village of Missing Men | comic story | 6 | pencils: Rafael Astarita; inks: Rafael Astarita | Joe Jordan of the Diamond Patrol (introduction); Denny (introduction); Barrett (villain, introduction); Barrett's gang (villains, introduction for all) |
| 16 | Death around the Bend | text story | 5 | script: Pat Gleason; pencils: Edd Ashe; inks: Edd Ashe | Jim Steele |
| 17 | The Man in the Moon | comic story | 4 | script: Bob McCay; pencils: Bob McCay; inks: Bob McCay | Little Nemo; Dr. Pill; Flip; The Man in the Moon (villain); a Moon Man |
| 18 | - | comic story | 1 | | |
| 19 | The Murderous "Red" Keenan Gang | comic story | 7 | script: Jack Cole; pencils: Jack Cole; inks: Jack Cole | Detective Cody; Lieutenant Storey; Keenan Gang (villains) |