How the idea of the Marvel interconnected universe - where heroes would crossover or “guest star” in each other’s books - first occurred in the teen comics for girls - with characters like Patsy Walker, Millie the Model, Kathy Carter and others.

Panel Breakouts Episode 009: Love Romances #85

Unstable Molecules is a podcast dedicated to exploring the origins of the Marvel Comics Universe. Beginning in the 1950s with the comics, creators and company who went on to establish Marvel, Unstable Molecules focuses mainly on the period between 1961 and 1968 when the Marvel Comics Universe was established. Characters like Spider-man, Hulk, Thor, Ant-man and the Fantastic Four are discussed along with artists and writers such as Jack Kirby, Steve Ditko and Stan Lee. As Stan would say: "Excelsior!"