vintagegeekculture:

After World War II ended, superheroes had a dramatic drop in popularity. They were seen as a wartime fad that would never really be a part of American culture again. Only some of the more popular characters like Superman, Sheena Queen of the Jungle, Black Terror, and Batman endured this period in continuous publication - most folded up by the early 1950s. 

Captain America became the host of a horror anthology comic; Blue Beetle, who at one point was one of the three most famous superheroes, became just an introductory host for a “crimes by women” comic. Most ignominiously of all, Green Lantern was pushed out of his own comic to make way for the adventures of a hero dog.