File:MSH-Submariner 1966TVtoon.jpg

Summary
Screen shot, Marvel Super Heroes 1966 animated TV series title card: "The Sub-Mariner: "Dr. Doom's Day"

Source: http://www.toonarific.com/pics_root/00002308/marvelsubmarinerlogo.jpg

Fair use in The Marvel Superheroes
Though this title card from the segment of a television series is subject to copyright, its use is covered by the U.S. fair use laws because:
 * 1) It illustrates an educational article about the series
 * 2) The image is historically significant
 * 3) The use of the still-image title card will not affect the value of the original animated series nor limit the copyright holder's rights or ability to distribute the original.
 * 4) It is a low-resolution
 * 5) The image is only a small, still portion of a long series of animated segments
 * 6) It is not replaceable with an uncopyrighted or freely copyrighted image of comparable educational value.