Rick Prelinger sez:
I’m delighted to let everyone know about our newest Internet Archive collection which, for want of a cooler title, we’re calling 35mm Stock Footage. Digitized from 35mm original negatives and release prints dating back to the first decade of the 20th century, these unedited sequences were shot for feature films but never used. Studio librarians saved them for use in future productions, and now you can download and use them yourself in a variety of formats, including 720p HD, absolutely free. As far as I know, this is Internet Archive’s first all-HD collection.
Direct to 35mm Stock Footage Collection