Adventure Comics #290 (DC, 1961 — Cover A)
DC Comics · Adventure Comics (1938-) · 25 pages · Published 1961-11-01
- Henry Boltinoff — Writer
- Jerry Siegel — Writer
- Jack Schiff — Writer
- Robert Bernstein — Writer
- John Forte — Penciller
- John Forte — Inker
- Bernard Baily — Penciller
- Bernard Baily — Inker
- Henry Boltinoff — Penciller
- Henry Boltinoff — Inker
- George Papp — Penciller
- George Papp — Inker
- Curt Swan — Cover Artist
- Stan Kaye — Cover Artist
When a new member of the 30th-century Legion of Super-Heroes arrives in 20th-century Smallville, he naturally turns to Superboy for help. But will our hero learn before it's too late "The Secret of the Seventh Super-Hero!"?
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