| Unofficial Adventure Comics Index |
Credits:
| Story | Otto Binder |
| Art | Al Plastino |
| Assistant editing | E. Nelson Bridwell |
| Editing | Mort Weisinger |
Feature Character(s):
- Superboy (last in Superboy Vol. 1 #64/3; also appears in Superboy Vol. 1 #204 between pages 10 and 11 of this issue)
Guest Star(s):
- Legion of Super-Heroes (first appearance of all)
- Cosmic Boy (Rokk Krinn; last chronological appearance in flashback in Adventure Comics #290; next in flashback in issue #323; also appears in Superboy Vol. 1 #204 between pages 10 and 11 of this issue)
- Saturn Girl (Imra Ardeen; last chronological appearance in flashback in Adventure Comics #290; next in flashback in issue #323; also appears in Superboy Vol. 1 #204 between pages 10 and 11 of this issue)
- Lightning Lad (Garth Ranzz; last chronological appearance in flashback in Adventure Comics #290; next in flashback in issue #323; also appears in Superboy Vol. 1 #204 between pages 10 and 11 of this issue)
Supporting Character(s):
- Jonathan Kent (in between Superboy Vol. 1 #63/3 and #65)
Other Character(s):
- a teacher in the 30th Century (first appearance)
Cameo Appearance(s):
- Legion of Super-Heroes (all behind the scenes, see Comments)
- Chameleon Boy (Reep Daggle; in between flashbacks in issue #290, Superboy Vol. 1 #204 and issue #323)
- Colossal Boy (Gim Allon; in between flashbacks in Secrets of the Legion of Super-Heroes #2; Superboy Vol. 1 #204 and issue #323)
- Invisible Kid (Lyle Norg; last in Action Comics #267/2; next in flashback in #323)
- Phantom Girl (Tinya Wazzo; in between flashbacks in #290 and Superboy Vol. 1 #204; next in Action Comics #290/2)
- Shrinking Violet (Salu Digby; last in Action Comics #267/2; next in flashback in #301/2)
- Triplicate Girl (Luornu Durgo; last in Action Comics #267/2; next in flashback in #323)
Location(s):
- Space Sector 2814
- Earth
- Smallville (in 20th and 30th Centuries)
- Legion Headquarters (first appearance)
- Smallville (in 20th and 30th Centuries)
- Earth
Comment(s):
- A number of Legionnaires were originally shown as background characters, though obviously not those we are familiar with. It is only through later stories and flashbacks that we can determine who may have been present during the first meeting with Superboy.
Story Reprinted in:
- Superman Annual #6/4 (Winter 1962-1963) [Lightning Boy changed to Lightning Lad and final page cut]
- DC Special Blue Ribbon Digest #1 (March-April 1980)
- Adventure Comics #491 (September 1982)
- Legion of Super-Heroes Archives #1 (1991)
- DC Silver Age Classics Adventure Comics 247 (1992)
- Millennium Edition: Adventure Comics No. 247 (November 2000)
- World's Best Comics: Silver Age Sampler (2004)
- Showcase Presents: Legion of Super-Heroes #1 ([April] 2007)
- Legion of Super-Heroes: 1,050 Years of the Future ([June] 2008)
- Adventure Comics Vol. 3 #0 (April 2009)
- DC Comics Presents: Legion of Super-Heroes #2 (February 2012)
- Legion of Super-Heroes: The Silver Age Omnibus #1 (2017)
Solicitation:
- First appearance of the Legion of Super-Heroes! Superboy encounters the Legion of Super-Heroes--super-powered teens from the future that want to initiate the Boy of Steel into the group. But can Superboy pass the tests put before him?
Credits:
| Story | Ed Herron |
| Art | George Papp |
| Editing | Mort Weisinger |
Feature Character(s):
- Green Arrow (last in World's Finest Comics #93/2; next in Adventure Comics #248/2)
Supporting Character(s):
- Speedy (last in World's Finest Comics #93/2; next in Adventure Comics #248/2)
Villain(s):
- two jewelry store robbers (first appearance)
- two vandals (first appearance)
- a sneak thief (first appearance)
- four thieves (first appearance)
- C. M. Hawkins (first appearance; attorney for the late J.J. Brandon's estate)
Story Reprinted in:
- DC Silver Age Classics Adventure Comics 247 (1992)
- Millennium Edition: Adventure Comics No. 247 (November 2000)
Credits:
| Story | Jack Miller |
| Art | Ramona Fradon |
| Editing | Mort Weisinger |
Feature Character(s):
- Aquaman (in between Adventure Comics #246/2 and #248/3)
Supporting Character(s):
- Topo (in between Adventure Comics #246/2 and #248/3)
Story Reprinted in:
- DC Silver Age Classics Adventure Comics 247 (1992)
- Millennium Edition: Adventure Comics No. 247 (November 2000)