Shorts From By The Way Intro

By The Way was one of Nickelodeon's inaugural shows. It was sorta like Pinwheel (and was even made by the same people) in the sense that it took acquired shorts and created an original framing device around them. The copy of the episode that's online doesn't have these shorts, but clips still show up in the intro, and I'd like to know what they're from. The one with the frog and the mouse has already been identified as 1977's Froggie Went a Courtin' by Frank Gladstone, but the rest remain a mystery. I tried reverse image searching screenshots, but didn't have any luck with that.