Lately, info on a lot of season 1 episodes have been added to Muppet Wiki. Not every first season episode yet, but I have a feeling that every episode from the first season will get a page at Muppet Wiki soon. Anyway, it seems like during the first season, almost every episode had a baker film or two. It seems like each epsiode was sponsored by 2 and/ 0r 3, 4 and/ or 5, 6 and/ or 7, 8 and/ or 9, ord 10. It seems like for almost every week the same letters and numbers are used as sponsors, even if some episodes don't have every sponsor (the muppet wiki pages for the first five episodes confirm that W, S, E, 2, and 3 sponsored the whole first week, though episode 2 was only sponsored by 3, one episode from that week was only sponsored by 2, and some epsidoes are sponsored by less letters). It seems like for the whole weeks, the same two baker films were shown in every episode of the week, regardless of whether both numbers were sponsors (though 10 normally sponsored the show on it's own, and only the 10 baker film was shown all week). Wanda the Witch was also shown in all of the first five epsiodes, even ones not sponsored by W. I wouldn't be surprised if epsiode 8 originally had the baker films for 4 and 5, and Noggin edited them (weird that Noggin would edit two baker films out of an epsidoe, especially if they weren't in any other episode shown... why not just keep one of the baker films and edit one of the two Jazz cartoons from that episode?).
Anyway, in the week of episodes 86-90, each epsidoe was actually sponsored by different numbers. episode 86 was apparatly sponsored by 2 and 3, episode 87 was sponsored by 4 and 5, episode 88 was sponsored by 6 and 7, episode 89 was sponsored by 8 and 9, and episode 90 was sponsored by 10. Odly enough, the Muppet Wiki page for epsiode 90 doesn't mention any baker films being included, but episode 86 featured the baker filsm for 1, 2, and 3. Three baker films in one episode! However, after that week it seems like the show went back to the pattern of the same numbers sponsoring the show each day of the week.