Interior reprints Man O' Mars (Fiction House, 1953 series) #1 (1953), some of which reprints earlier material.
Previous indexer tentatively attributed this cover to Sid Check. Angelo Torres claims this as his own work via Ian Scott McGregor on the E.C. Fan-Addict Facebook group. (9/8/2017)
villainess Ylla named after character in Bradbury's Martian Chronicles