If you are looking to curate this content, here are the best legal sources for public domain and rare footage:
Services like Tubi offer massive libraries of niche and older content legally and for free. rarevideofree
Help us buy more tapes and hard drives. Donate to our preservation fund [Link]. If you are looking to curate this content,
Historically significant clips or films whose copyrights have expired, making them free for public use. making them free for public use.