Mutoscope cards were 5.25″ × 3.25″ (13.3 cm × 8.25 cm) cards were published during the 1940s by the International Mutoscope Reel Company and other firms. They are not individual pictures from Mutoscope reels and have no connection whatsoever to the Mutoscope motion-picture device. All carry the inscription "A Mutoscope card."