I apologize if this has been addressed, but I haven't read through 136 pages on this thread.
So regarding the article about lost episodes -- meaning ones actually missing from the archive as opposed to just not being accessible:
Sesame Street has produced over 4,500 original episodes of television over the course of fifty years. Most TV shows consider it a huge landmark if they're able to pass one hundred episodes, an achievement that Sesame Street has reached forty-five times over. Given the vast volume of content...
muppet.fandom.com
First, I am happy that the list is so (relatively) small given how long the show has run and how many episodes have been produced. At the same time, it's a major bummer for me because almost all of the ones reported as missing are from my prime years of watching the show.
Anyway -- can anyone shed specific light on how we know those specific ones are missing, and (if known) what happened to them? The article makes clear that CTW didn't just randomly bulk-erase tapes, and they mention things like (IIRC) flooding, fires, etc. But it's not specific regarding those particular episodes. I guess it doesn't matter, I'd just like to know. I am also familiar with stories of how 2-inch Quad tapes can sometimes be pulled out of the vault for the first time in 40 years and found to be deteriorated or unplayable, etc. So it's not surprising that a bunch of shows fell through the cracks -- what's surprising is how many they still have.