Fantasy Masterpieces, became Marvel Super-Heroes with issue #12 began showcasing a try-out feature as each issue’s lead. This encompassed solo stories of such supporting characters as Medusa of the Inhumans, as well as the debuts of Captain Marvel (#12), the Phantom Eagle (#16) and the Guardians of the Galaxy (#18). The Spider-Man story drawn by Ross Andru in issue #14 was originally planned as a fill-in issue of The Amazing Spider-Man but was used here when that title’s regular artist, John Romita Sr. recovered more quickly than anticipated from a wrist injury. Andru would become the regular artist on The Amazing Spider-Man several years later.
EHT Comics 