Unknown Worlds of Science Fiction — Curtis Magazines
Issue: #1
Last valuation update: 2026-03-03
Creators: Neal Adams, John Romita, Al Williamson, Frank Brunner, Frank Frazetta, Tony Isabella, Kelly Freas, Marv Wolfman, Roy Krenkel, Len Wein, Len Grow, Mike Esposito, Ernie Chua, Tom Palmer, Esteban Maroto, Roy Thomas, Gene Colan, Wally Wood, Gerry Conway, Michael Wm Kaluta