https://archive.org/details/prelinger
Prelinger Archives collection rights statement:
https://archive.org/details/prelinger&tab=about
The Prelinger Archives is Rick Prelinger’s archive of approximately twelve thousand films. The site notes: “Its goal remains to collect, preserve, and facilitate access to films of historic significance that haven’t been collected elsewhere.” After the Library of Congress acquired Prelinger’s original “ephemeral” collection in 2002, he continued the site with a focus on amateur films and home movies. The collection may be sorted by views, title, date archived, and creator, and is searchable by topic.