Prelinger Archives
URL: https://archive.org/details/prelinger?&sort=-downloads&page=3
Terms of Use: https://archive.org/about/terms.php
Copyright Info: https://archive.org/about/terms.php

Prelinger Archives is a great site to access images and videos from a by gone era. A lot of the material on the site is public domain, but some of it is not. Thus make sure if you use any CC marked materials that you adhere to its terms of use.