3171 and 3174 have aired on Noggin as well.
Oh. I read that before these episodes were added to iTunes Muppet Wiki only had (previously incomplete) info on one of the volume 2 episodes, and somehow didn't notice that the Muppet Wiki pages DO mention that they aired as part of 123 Sesame Street. And I was aware that the wiki doesn't have info on every episode shown as part of 123 Sesame Street.
Just watched episode 598. There must have been a week or two of snow on the street (most of the season 5 episodes included feature snow). I have my own thoughts and observations.
Episode 597 is titled "Sherlock Hemlock Investigates" and 598 "A Sesame Street Winter Wonderland" on iTunes, but I wonder if those might have been mixed up, even though both apply to both episodes. I feel epsiode 597 has more winter to it, and this has more Sherlock Hemlock (him solving a mystery on the street, in addition to a caveman sketch), even though both episodes include Sherlock in the same number of scenes (only in episode 597 he has a minor role in one sketch).
The scene with David putting a hat on Oscar seems like a remake of a scene from epsiode 406, only here the scene has snow and David is there isntead of Gordon. Speaking of Gordon is he in any of the season 5 episodes on iTunes (there's still two I have yet to watch)?
This is the first time I saw a Wally and Ralph segment. While it is very funny, I feel it doesn't have the same charm that Buddy and Jim had.
During the scene with Sherlock Hemlock and Luis, when Sherlock learned that Luis' pencil is "tall and yellow", I expected Bert to come in. But he didn't. I also wondered at first if this scene might have been an insert. It looked like Luis rolled his sleeves up (why would he need to do that during winter?, and I didn't see any winter clothes on Sherlock or Big Bird (no scarf? no earmuffs? No little bits of snow over their bodies?). I couldn't quite tell whether Jay's outfit is wintery-enough, thoug. But Luis is shown wearing the same orange shirt in other scenes (though I think he's worn it in other episodes from this era).
I was surprised to see that the late-1980s "News Flash" title card was put on the Sesame Street News segment, as opposed to the original or black and white card. I'd read that the show didn't replace the previous title cards in repeats of older sketches until the late-1980s/early-1990s, but here it's the late-1980s one. And while the late-1980s title card often replaces older title cards online and on DVD releases, they normally seem to show what would have been in the episodes as aired. I'm also surprised by how good the picture quality on the title card looks compared to the rest of the sketch, especially considering the title card sometimes looks poorer-quality on certain DVD releases.
I also noticed a fade-in from the previous sketch and a fade-out to the next one. While these kinds of transitions were common back then, it makes me wonder if maybe they needed to cut and replace a segment and used the 1980s master tape for this. I'd like to think Sesame Workshop didn't add segments to episodes that had to be cut (I think it's episode 123 that had something cut and the run time on the iTunes release is two minutes shorter than the other episodes). Of course, when restoring episodes, it would make more sense to restore the master tapes for individual sketches and copy those onto the full episodes as opposed to spending the time and money to restore the entire episodes, which would mean spending time/money to restore every segment over and over and over again.
I've also noticed that when Mr. MacIntosh appears his cart is empty. Either that or it's all closed.