Happy diving into the deep.

archive.org (the Internet Archive) often hosts film materials: public-domain uploads, trailers, scans of promotional materials, or user-uploaded recordings. Availability varies by copyright status and upload policies. Search archive.org for:

For decades, the Special Edition was unavailable on DVD. When Fox finally released a bare-bones DVD in 2000, it was non-anamorphic (horrible on widescreen TVs). The subsequent Blu-ray releases were plagued with Digital Noise Reduction (DNR), scrubbing away the film grain and making the actors look like wax figures. As a result, fans turned to the Internet Archive to find the "lost" perfect versions: 1080p scans of the Japanese laserdisc, TV broadcast rips of the extended cut, and fan-restorations.