The Amazing Spider-Man #96-98 was a pretty important arc in that it strayed from the Comics Code Authority in an effort to reach readers in a very special tail about drug abuse.  In an interview with Comics Alliance, Stan Lee recounts how the code inflexibility wouldn’t allow the story to be published.

Marvel circumvented potential censorship on behalf of  the United States Department of Health, Education and Welfare (now the Department of Health and Human Services) by bucking the code.

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