As I may have mentioned in that thread, I was responsible for contributing the shooting dates for Henson's films, which previously existed on given pages such as "Body Parts vs. Heavy Equipment," "Number Twelve Rocks", and even the first pitch reel.
While I recognize they're not technically the same as the sketches, with slates and all, my reasoning was they were still of value to the history the earliest years of Sesame Street, not to mention Jim's career of the time.
I'll leave it to others to decide whether that was a good idea.
Hi Scott. Noel's been using this phrase on more interviews and podcasts than I could keep track of, but his "About Us" page is the more recent printed source.