In a hunt for royalty free, historical footage, I found quite a few road blocks. Most free footage is water stamped, or too poor of quality. Licensing footage can cost a fortune that is just not available. How have we worked around those roadblocks? Archive.org is a great resource for awesome, archival footage and audio material (as well as hosting some dope 90’s video games (Oregon Trail!!!)), they also have a Youtube channel. Getty hosts images and video, though it is rarely free. One last site I found was www.dvarchive.com which had quite a bit of license/royalty-free material and only charged a one time handling cost- which wasn’t bad.
So, best of luck in your search for free stuff- ’cause only suckers pay for stuff (Right Sean Parker?).