3 things
From The Lost Media Wiki
1. I found a mysterious episode, idk how to describe it | https://www.youtube.com/watch?v=mFdu1ZtJZO8
2. What season does this episode belong to? | https://www.youtube.com/watch?v=y8N-Q1GHXAQ
3. I found an episode called "Dougal's Machine", but it is presented in color, & an episode with the same name aired in the UK in October 10, 1966, which was during the black-and-white era, so idk if that's the episode or not... | https://www.youtube.com/watch?v=VMGOTCcRBjk