If you're looking for it on DVD, it looks like it's on https://www.amazon.com/Walt-Disney-Treasures-Mickey-Mouse/dp/B0002S64UA. (Check to see if your local libraries have a copy if you don't want to spend the money.)

Is it just those two sources you don't want or is it any web-based video site? If the former, google the video and add -youtube -dailymotion in the query. It should eliminate results from those two sites.