For a while, I had been wondering if the original (aired) version of the "Imagination" song from Sesame Street actually ends with that sequence where balloons fall all over Sesame Street or if that was just part of Bedtime Stories and Songs. I'm not sure if any of us (besides Scarecroe) has a copy taken from an episode of the show, and Sesame Workshop has never uploaded that clip (just the original). The only copy I can find on YouTube is taken from the video.
Speaking of which, the "to do list" on Scarecroes main wiki page notes that "Imagination" is listed with different time lengths in scripts, ranging from about 5:18 at the longest (could it maybe be reflecting the original cut with the monsters opening?) and 3:51 at the shortest (in episode 1417, which Scarecroe recently added images from). It's possible it did have that ending but it's been shortened in many different airings (which might make it harder to determine if it was on the show just from finding an episode with it). The copy on YouTube, taken from the video release (so it might not be entirely reflective of actual length) is listed with the length as 4:31.
The remake only ends with balloons falling onto Ernie's bed, without showing balloons all over the street.
I looked at the "Imagination" wiki page and it says that the original cut actually lasted ten minutes, longer than the 5:18 run time listed in one of the scripts, but the official source might have been guessing/rounding to the nearest ten. But if it really was closer to ten minutes, then that is one long classic segment.
Looking at the version from Bedtime Stories and Songs, I tried looking at the street to see if it looks more like the 1972 or 1986 version of the street, but can't find anything to really show (it also begins with an exterior shot of the street where nothing happens, I don't know why that would have been needed on the insert - or even the video - and the street does look different there than in the balloons sequence). The only thing I can really think to check is how the fence in the arbor looks, but I can't really tell if it has graffiti or not - particularly due to the darkness, all the balloons (including transparent ones), and the fact that it's so far off in the background.