Sesame Street Walk

[minor muppetz]

I saw this shirt at a store yesterday that read "Sesame Street Walk", and at the bottom, it read "New York, July 3 1972". Does anybody know if Sesame Street walk was some kidn of special event or soemthing? Or was the shirt just making somehting up, with a random date listed?

I was surprised when I saw this shirt but had never heard of Sesame Street walk before. if it was an existing production of some sort, then it must be really obscure.