Lost 1870-1970s Movie Megathread

The Wiki is helpful, but there's no way it could log all the lost files out there. We're getting a general, broad look at things and there's plenty of lost films we know about that aren't logged on Wikipedia, let alone IMDb or Letterboxd for some of them.

I know on our Wiki, there's an article or section for rare and hard to find movies and that alone is really hefty. But, having something like this here and possibly incorporate it on the Wiki would be nice, like a subsection of the lost film section or go about it like the r/htf thing and links to said films would get added as they're made or found depending on their significance.