Galaxy Master Cover — Amazing Stories December 1956, Space Escape

A massive riveted airlock or spacecraft hatch dominates the background, suggesting advanced interstellar vessel technology, as a square-jawed spaceman in a silver pressure suit forces his way through the sealed portal. Two scantily clad women — one in red, one in blue — cling desperately to the hero amid an explosion of debris. The cover illustrates the lead story 'The Galaxy Master,' in which planets and women alike are mere pawns in a cosmic power struggle.