Name: Prelinger Archives
URL: https://archive.org/details/prelinger
URL to the site’s rights statement
The Prelinger Archives offers free access to many films through the Internet Archive, often under the Public Domain Dedication. The majority of the archive is free to use and distribute as you please, however, there are still some footage and images that may have copyright. In this case, the archive recommends the user get in contact with them to ask about possible chances of reuse and distribution.
PD_Prelinger