Well, it was good old fashioned detective work. I still have the W2 from my paycheck dated 1975...I knew that it had to have been from the previous year. All Sesame Street episodes are sponsored by a letter & a number. The only think I remebered for sure was that the number 4 was a big part of the show. I read the synopses of all the shows in that range, until one seemed very familiar. I watched a few clips from that episode (none with me however) and started to remember it. I am 99% sure that this is it.