The Internet Archive, a non-profit digital library, was founded in 1996 with the mission of providing universal access to all knowledge. One of its primary goals is to preserve and make accessible classic films, like Cinderella (1950), for future generations. The Internet Archive's film collection includes a vast array of public domain and Creative Commons-licensed movies, which can be streamed for free.
The Archive hosts a mix of promotional materials, literary adaptations, and home video captures: Production Materials: You can find the 1965 Re-Release Pressbook cinderella 1950 internet archive