In honor of Muppet*Vision 3D closing at Disney World, we look at the history of The Muppets before Kermit joined Miss Piggy and Fozzie Bear. Two decades earlier, Kermit was hanging out with Sam and Friends -- a local TV show in Washington, D.C., that launched Jim Henson's career. This episode comes from the podcast Sidedoor, produced by The Smithsonian with support from PRX. Their host Lizzie Peabody journeys back to 1955 to figure out how this eccentric cast of puppets built the foundation for everything Jim Henson would do afterwards, from Sesame Street to The Muppet Show and even Labyrinth. And the Sidedoor team ventures into the conservation labs to learn what it took to revive these crumbling hunks of foam and fabric when they landed at the Smithsonian.

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