Adventure Comics was published by DC Comics from 1938 to 1983 and revived from 2009 to 2011. In its first era, the series ran for 503 issues (472 of those after the title changed from New Adventure Comics), making it the fifth-longest-running DC series, behind Detective Comics, Action Comics, Superman, and Batman. It was revived in 2009 by writer Geoff Johns with the Conner Kent incarnation of Superboy headlining the title’s main feature, and the Legion of Super-Heroes in the back-up story. It returned to its original numbering with #516 (September 2010). The series finally ended with #529 (October 2011), prior to DC’s The New 52 company reboot.
In the late 70’s conventional superheroes returned to the book, beginning behind the Spectre, first a three-issue run of Aquaman (issues #435–437, an early assignment for Mike Grell) and then a newly drawn 1940s Seven Soldiers of Victory script (issues #438–443). Aquaman was promoted to lead (issues #441–452), and backing him up were three-part story arcs featuring the Creeper (#445–447), the Martian Manhunter (#449–451), bracketed by issue-length Aquaman leads. He was awarded his own title and Superboy (#453–458) took over Adventure with Aqualad (#453–455) and Eclipso (#457–458) backups. Following this was a run as a Dollar Comic format giant-sized book (issues #459–466), including such features as the resolution of Return of the New Gods (cancelled in July–August 1978), “Deadman“, and the “Justice Society of America“.
Superboy became Superboy starring the Legion of Super-Heroes with issue #197 (August 1973). Crafted by Bates and Cockrum, the feature proved popular and saw such events as the wedding of Bouncing Boy and Duo Damsel in Superboy #200 (Feb 1974). Cockrum was replaced on art by Mike Grell as of issue #203 (August 1974) which featured the death of Invisible Kid. With #231 (September 1977), the book’s title officially changed to Superboy and the Legion of Super-Heroes and also became a “giant-size” title. At this point, the book was written by longtime fan Paul Levitz and drawn by James Sherman, although Gerry Conway frequently wrote as well. Saturn Girl and Lightning Lad were married in All-New Collectors’ Edition #C-55 (1978), a treasury-sized special written by Levitz and drawn by Grell. In #241–245 (July–December 1978) Levitz and Sherman (and then Joe Staton) produced what was at that time the most ambitious Legion storyline: “Earthwar“, a galactic war between the United Planets and the Khunds, with several other villains lurking in the background. During this period, Karate Kid was spun off into his own 20th Century-based self-titled series, which lasted 15 issues. Levitz left the book, to be replaced full-time by Gerry Conway.
Superboy departed from the Legion due to a plot of a villain, and the book was renamed simply Legion of Super-Heroes starting with issue #259 (January 1980). Editor Jack C. Harris hired Steve Ditko as guest artist on several issues, a decision which garnered a mixed reaction from the title’s readership. Jimmy Janes became the regular artist in a lengthy tale by Conway (and later Roy Thomas) involving Ultra Boy’s disappearance during a mission, and his long odyssey to rejoin the team. This story told the tale of the Legionnaire Reflecto (only glimpsed during the “Adult Legion” stories in Adventure Comics), featured villainy by the Time Trapper and Grimbor the Chainsman, and saw Superboy rejoin the team.