American Treasure: Sesame Street Turns 45

A big birthday milestone for one of America's beloved television shows.
1:49 | 11/11/14

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Transcript for American Treasure: Sesame Street Turns 45
American treasure turns 45. It was 1969, woodstock. Apollo 11, landing on the moon. And sesame street landing in living rooms across America. ? Sunny day ? at first, it was a TV experiment. Could children actually learn from TV? That first year, banned in Mississippi because of its integrated cast. Gordon and Susan and maria, the first Latina in a major role on television. The other costars, big bird, Bert and Ernie, and Oscar. Did you know he was Orange in the first season? Though, always a grouch. It annoys me. Reporter: Big bird. And snuff lup pus was an imaginary friend. Adults on the show refusing to believe he existed. Producers changed that, fearing the show was discouraging children from sharing important things with their parents. Even imaginary friends. And when Mr. Hooper died in real life, there were big questions for the producers about what to do. So, they told children the truth. Mr. Hooper died. Reporter: The milkshakes at Mr. Hooper's store, 20 cents in 1 1969. They tackled so many issues through the years. Hunger among the more recent. Little lily from a family in need. She drew a crowd with us in central park. Hi. Reporter: Fist bump? Not always easy for a muppet. 45 years and counting. And what's their secret? Well, you know, I use a lot of botox, David. Reporter: I can tell. When I told the muppets I had just met maria. I just met maria. You did? Isn't she awesome. Reporter: I watched her since I was a kid. You did? Reporter: I was a kid at one point? You were? Reporter: I grew up watching you. Do you think she gets tired of hearing that? No, I think she loves that all the kids are making good for themselves. You did all right for yourself, David, we're all proud. Yeah. Reporter: With help from "Sesame street." We'll see you back here tomorrow night. Good night.

This transcript has been automatically generated and may not be 100% accurate.

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