| 0 | - | cover | 1 | pencils: Gil Kane; inks: Gil Kane; colors: Drew Moore | The Atom [Ray Palmer]; The Atom [Al Pratt] |
| 1 | The Hole-in-the-Wall Lawman! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson | The Atom [Ray Palmer] |
| 2 | The Hole-in-the-Wall Lawman! | comic story | 13.33 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; The Black Phantom; Professor Morton Oldham; Jean Loring |
| 3 | The Atomic Flea! | comic story | 10.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Jean Loring; Hightop Harry; Melissa |
| 4 | The World of the Magic Atom! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson | The Atom [Ray Palmer]; Zatanna (inset) |
| 5 | World of the Magic Atom! | comic story | 23.83 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Biff Parker; Zatanna; Hawkman (flashback); Hawkgirl (flashback); The Druid; Zatara (flashback) |
| 6 | The Challenge of the Computer Crooks! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson | The Atom [Ray Palmer] |
| 7 | Challenge of the Computer Crooks | comic story | 12.33 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Jean Loring; Rod Mack |
| 8 | The Night of the Little People! | comic story | 10.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Arthur Ennis; Dave Jones; Maya; "Sandy" Shore |
| 9 | Combat Under Glass! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson; letters: Ira Schnapp | The Atom [Ray Palmer] |
| 10 | Combat Under Glass! | comic story | 12.33 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Dr. Loring; Jean Loring; Professor Vasiliev |
| 11 | The Adventure of the Canceled Birthday! | comic story | 10.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Henry Fielding; Professor Alpheus V. Hyatt; Theodore Hyatt; Alfred Hyatt; Reddy Bolins; John Fielding |
| 12 | Bat-Knights of Darkness! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson | The Atom [Ray Palmer] |
| 13 | Bat-Knights of Darkness | comic story | 23 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Elvarans; Avery Sanders; Jean Loring; Eddie Gordon; Olan Parr; Slim Peters |
| 14 | Thief with the Tricky Toy! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson | The Atom [Ray Palmer] |
| 15 | Riddle of the Far-Out Robbery! | comic story | 12.33 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Dr. Ewald Barnes; Bill Ames; Oban Thokol; Krommer Pav; Davarians; Enrichetta Negrini (flashback) |
| 16 | Thief with the Tricky Toy! | comic story | 10.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Jean Loring; Billy Knolles |
| 17 | The Atom-Destruction of Earth! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson | The Atom [Ray Palmer]; Jason Woodrue |
| 18 | The Atom-Destruction of Earth! | comic story | 23 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; The Plant Master [Jason Woodrue]; Maya; Jean Loring |
| 19 | The Man in the Ion Mask! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson; letters: Ira Schnapp | The Atom [Ray Palmer]; Man in the Ion Mask |
| 20 | The Man in the Ion Mask! | comic story | 12.33 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Jean Loring; Ed Jameson; The Man in the Ion Mask |
| 21 | The Spy Who Went Out for the Gold! | comic story | 10.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Agent 237X; Boris Kalumchuk; Jean Loring |
| 22 | - | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Gil Kane | The Atom [Ray Palmer]; The Bug-Eyed Bandit |
| 23 | The Eye-Popping Perils of the Insect Bandit! | comic story | 23 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; The Bug-Eyed Bandit; Clifford Rogers; Jean Loring; Jimmy Loring; Ed Thayer; Alice Thayer |
| 24 | - | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Gil Kane; letters: Ira Schnapp | The Atom [Ray Palmer]; The Panther |
| 25 | Beauty and the Beast-Gang! | comic story | 12.33 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; The Panther Gang; Dawn Hudson; Willie Farr |
| 26 | Stowaway on a Hot-Air Balloon! | comic story | 10.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Benjamin Franklin; Professor Alpheus V. Hyatt; Joseph Montgolfier; Etienne Montgolfier; J. A. C. Charles |
| 27 | The Time-Standstill Thefts! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Gil Kane; letters: Ira Schnapp | The Atom [Ray Palmer]; Chronos |
| 28 | Time-Standstill Thefts! | comic story | 14.33 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Chronos; Anton Teljas; Eva Teljas; Mrs. Ophelia Templeton |
| 29 | The 100,000 "Atoms" of Ivy Town! | comic story | 8.67 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Jean Loring |
| 30 | - | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Gil Kane; letters: Ira Schnapp | The Atom [Ray Palmer]; The Atom [Al Pratt]; The Thinker |
| 31 | The Thinker's Earth-Shaking Robberies! | comic story | 21.5 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; The Atom [Al Pratt]; The Thinker; Cheryl Drake; Jean Loring; Artie Perkins; Alicia Perkins |
| 32 | Daze of the Bat-Knights! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Gil Kane; letters: Ira Schnapp | The Atom [Ray Palmer] |
| 33 | Daze of the Bat-Knights! | comic story | 21.5 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Elvarans; Jean Loring; Lonny; Cherie; Eddie Gordon; Luke Preston; Hestera; Olin Parr |
| 34 | Good Man, Bad Man--Turnabout Thief! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson; letters: Ira Schnapp | The Atom [Ray Palmer]; Hawkman [Katar Hol; Carter Hall] |
| 35 | Good Man, Bad Man--Turnabout Thief! | comic story | 22 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Hawkman [Katar Hol; Carter Hall]; Mrs. Burns; Hawkgirl [Shayera Thal; Shiera Hall]; Toyboy [Johnny Burns]; Jean Loring |
| 36 | - | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson; letters: Ira Schnapp | The Atom [Ray Palmer] |
| 37 | The Up and Down Dooms of the Atom | comic story | 22 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Jean Loring; Palonds; Honds |
| 38 | Amazing Arsenal of the Atom-Assassin! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson; letters: Ira Schnapp | The Atom [Ray Palmer]; The Bug-Eyed Bandit |
| 39 | Amazing Arsenal of the Atom-Assassin! | comic story | 22 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; The Bug-Eyed Bandit; Warden Abbot; Jean Loring; Helga Dornwood; Carl Dornwood; Sue Shan |
| 40 | Little Man--You've Had a Busy Day! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Murphy Anderson; letters: Ira Schnapp | The Atom [Ray Palmer]; Big Shot |
| 41 | Little Man--You've Had a Big-Gang Day! | comic story | 23 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Jean Loring; The Big Gang [Big Head; Big Ben; Big Wig; Big Bertha; Big Shot; Big Cheese; Big Deal] |
| 42 | Plight of the Pin-Up Atom! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer] |
| 43 | Plight of the Pin-Up Atom! | comic story | 12.5 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Enrichetta Negrini; Smarts; Papa Arzoni; Mama Arzoni; Chief Baxter; Jean Loring |
| 44 | Col. Blood Steals the Crown Jewels! | comic story | 9.5 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Alpheus V. Hyatt; Talbot Edwards; Colonel Tom Blood |
| 45 | Duel Between the Dual Atoms! | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Gil Kane; letters: Ira Schnapp | The Atom [Ray Palmer]; The Atom [Al Pratt] |
| 46 | Duel Between the Dual Atoms | comic story | 22 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; The Atom [Al Pratt]; Betty Roberts; Marion Thayer; Jean Loring |
| 47 | - | cover reprint (on interior page) | 1 | pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer] |
| 48 | Meet Major Mynah! | comic story | 22.17 | script: Gardner Fox; pencils: Gil Kane; inks: Sid Greene | The Atom [Ray Palmer]; Major Mynah; Viet Minh; Jean Loring; Hawkman [Katar Hol] (cameo) |
| 49 | Sinister Stopover--Earth! | cover reprint (on interior page) | 1 | pencils: Mike Sekowsky; inks: Jack Abel | The Atom [Ray Palmer] |
| 50 | Sinister Stopover... Earth! | comic story | 23.17 | script: Frank Robbins; pencils: Mike Sekowsky; inks: George Roussos | The Atom [Ray Palmer]; Major Mynah; General Naylor; Professor Richard Alvin; Jean Loring; Admiral White; "Jonah" Wale; Physalians |