OK, that is a very important archive. Spread copies, please.
I have no way to spread copies other than having them up on YouTube. I believe some people know how to download YouTube videos. I don’t, so I can’t make suggestions how to do it. All I can do is set them up in convenient playlists on my channel, and name them so that searches bring up sets. They get a fair number of views, though I admit to always being disturbed when I see those I assume are libs down arrowing the war videos. On the 9/11 videos, so far only one video has a down arrow.
As for the originals, I’m in the process of throwing away the tapes and only have the digital masters in my editing system, as well as the YouTube final versions. If my channel ever gets taken down, for whatever reason, I can recover everything for now.