Who would have thought that a one-shot Superboy story would be the seed that spawned a team that would last forty years (so far) and gain the devotion of thousands of fans?
These earliest Legion stories were produced by many different creative teams, without regard to continuity or any awareness of the team's future. Confusion reigned. Did the Legion operate in the current day, the 21st century, or the 30th century? Were they adults or teens? Did Supergirl meet the original Legionnaires, or their children? What powers, exactly, did Star Boy have? How could Supergirl and Superboy both be Legionnaires, even though Superboy didn't know that Supergirl existed or would exist?
Later creative teams and fans came up with workable solutions to all these confusions -- sometimes several different solutions, which led to confusions of their own. Some things just had to be ignored as mistakes, others were cleverly included into Legion continuity.
Most of the stories of this period are fluff, not even significant as historical pieces. But several do stand out, including "The Legion of Super-Heores" (Adventure #247), "Supergirl's Three Super-Girl Friends" (Action #276), "Superboy's Big Brother" (Superboy #89), "The Secret of the Seventh Super-Hero" (Adventure #290), and "The Boy With Ultra-Powers" (Superboy #98).
My personal evaluation of each story is given below: 
is superb and is awful.
Stories marked by 
appear in the LEGION
ARCHIVES series.
| Comments | ISSUE | DATE | TITLE | Roll Call |
 |
|---|---|---|---|---|---|
|
|
ADVENTURE 247 | 58/04 |
The Legion of Super-Heroes
|
Brainiac 5, Cosmic Boy, Lightning Lad, Superboy (joined), Saturn Girl | 1958-1 |
|
|
ADVENTURE 267 | 59/12 |
Prisoner of the Super-Heroes
|
Cosmic Boy, Lightning Lad, Superboy, Saturn Girl | 1959-1 |
|
|
ACTION 267 | 60/08 |
The Three Super-Heores
|
Cosmic Boy, Chameleon Boy, Colossal Boy, Invisible Kid, Lightning Lad, Supergirl, Saturn Girl | 1960-1 |
|
|
SUPERBOY 86 | 61/01 |
The Army of Living Kryptonite Men
|
Lightning Lad, Superboy | 1960-2 |
|
|
ADVENTURE 282 | 61/03 |
Lana Lang and the LSH
|
Cosmic Boy, Chameleon Boy, Lightning Lad, Superboy, Saturn Girl, Star Boy (origin) | 1961-1 |
|
|
ACTION 276 | 61/05 |
Supergirl's Three Super Girl Friends
|
Brainiac 5 (origin)(joined), Bouncing Boy, Phantom Girl, Sun Boy, Saturn Girl, Supergirl (joined), Shrinking Violet, Triplicate Girl | 1961-2 |
|
|
SUPERBOY 89 | 61/06 |
Superboy's Big Brother
|
Mon-El (origin) | 1961-3 |
|
|
SUPERMAN 147 | 61/08 |
The Legion of Super-Villains
|
Cosmic Man, Cosmic King (origin), Lightning Man, Lightning Lord (origin), Saturn Woman, Saturn Queen (origin), LSV | 1961-4 |
| CAMEO | ADVENTURE 289 | 61/10 | Clark Kent's Super-Father | Cosmic Boy, Lightning Lad, Saturn Girl, - statuettes only | 1961-4a |
|
|
ADVENTURE 290 | 61/11 |
The Secret of the 7th Super-Hero
|
Brainiac 5, Cosmic Boy, Chameleon Boy, Lightning Lad, Phantom Girl, Sun Boy (origin)(joined), Superboy, Saturn Girl | 1961-5 |
| CAMEO | SUPERBOY 93 | 61/11 |
Lana Lang's Superboy ID Detection Kit
|
Chameleon Boy | 1961-5a |
| CAMEO | SUPERMAN 149 | 61/11 |
The Death of Superman
|
Cosmic Boy, Lightning Lad, Saturn Girl | 1961-5b |
| CAMEO | ACTION 284 | 62/01 | ? | Mon-El | 1962-1a |
| CAMEO | ACTION 285 | 62/02 |
The World's Greatest Heroine
|
Brainiac 5, Cosmic Boy, Lightning Lad, Saturn Girl | 1962-1b |
|
|
ADVENTURE 293 | 62/02 |
The Legion of Super-Traitors
|
Cosmic Boy, Lightning Lad, Mon-El, Superboy, Saturn Girl, LSP(origin) | 1962-1 |
| B.4.00. | ACTION 286 | 62/03 |
Jury of Super-Enemies
|
Cosmic King, Lightning Lord, Saturn Queen, LSV | 1962-1c |
|
|
ACTION 287 | 62/04 |
Supergirl's Greatest Challenge
|
Brainiac 5, Bouncing Boy, Cosmic Boy, Lightning Lad, Sun Boy, Saturn Girl, Supergirl, Triplicate Girl | 1962-2 |
| CAMEO | SUPERMAN 152 | 62/04 |
The Robot Master
|
Brainiac 5, Cosmic Boy, Chameleon Boy, Lightning Lad, Sun Boy, Saturn Girl | 1962-2a |
| CAMEO | ACTION 288 | 62/05 |
Man Who Made Supergirl Cry
|
Mon-El | 1962-2b |
|
|
ACTION 289 | 62/06 |
When Supergirl Played Cupid
|
Cosmic Man, Chameleon Man, Lightning Man, Phantom Woman, Sun Man, Saturn Woman, Triplicate Woman | 1962-3 |
| CAMEO | ACTION 290 | 62/07 |
Supergirl's Super Boy-Friends
|
Phantom Girl | 1962-3a |
|
|
SUPERBOY 98 | 62/07 |
The Boy with Ultra-Powers
|
Superboy, Pete Ross, Ultra Boy (origin)(joined), Marla | 1962-4 |
| CAMEO | JIMMY OLSEN 62 | 62/08 |
Superman's Phantom Pal
|
Cosmic Boy, Lightning Lad, Mon-El | 1962-4a |
| A.3.00. | SUPERMAN 155 | 62/08 |
The Downfall of Superman
|
Cosmic Man, Lightning Man | 1962-4b |
