For any youtube channel, you can sort all the videos on the channel by date.
1) Go to the channel's main page.
2) Near the top of the channel's main page, you'll see a "bar" of choices - Home, Videos, Playlists, Community, etc. Click on Videos.
3) Off to the right, you'll see "Sort By". Click on that, and you can sort by "Date added", either oldest or newest. Choose one. Videos are now sorted by date. Scroll and find.