Adventure Comics 290

Adventure Comics #290 Preboot » Pre-Crisis Cover by Curt Swan, Stan Kaye and Ira Schnapp Story title The Secret of the Seventh Super-Hero Previous story Superboy v1 #89:Superboy's Big Brother Next story Adventure Comics #293:The Legion of Super-Traitors Cover date November 1961 Creators Writer(s) Mort Weisinger and Unknown Penciller(s) George Papp Inker(s) George Papp Letterer(s) Joe Letterese Colourist(s) Unknown Editor(s) Mort Weisinger Cover artist(s) Curt Swan, Stan Kaye, Ira Schnapp

First appearances

This issue marks the first appearance of the following characters and recurring key Legion story elements:

Other stories in this issue

There is an additional story that does not feature the Legion - "The Invasion of the Bizarro World"

Reprints

This Legion story has been reprinted in the following:

• Superboy v1 #147
• Adventure Comics #495
• Legion of Super-Heroes Archives Vol. 1