Issue: #271
Last valuation update: 2026-10-20
"Voyage to Dimension X!" Reprinted in Showcase Presents: Superman #2."Supergirl’s Fortress of Solitude!" Supergirl creates her own Fortress of Solitude in the Arabian Desert. Reprinted in Action Comics #334, Supergirl Archives #2 & Showcase Presents: Supergirl #1.
Creators: Jerry Siegel, Curt Swan, Stan Kaye, Otto Binder, Jim Mooney, Al Plastino, Mort Weisinger
Characters: Superman, Lois Lane, Supergirl, Lex Luthor, Supergirl Robot, Miss Hart, Streaky