Everything on this set comes from the
Prelinger Archives
at the Internet Archive — a collection of ephemeral film (advertising, educational, industrial and amateur)
that the archive makes freely available for reuse. Nothing is downloaded or re-hosted here: the video streams
straight from archive.org, and every channel links back to its item page. Films are picked at random and
started somewhere in the middle, which is why you never get a beginning. They are historical documents, and
some of them carry the assumptions of the year they were made.