An article about it: <a href="https://securitronlinux.com/bejiitaswrath/nt-3-50-build-782-rc2-source-code-has-been-leaked/" rel="nofollow">https://securitronlinux.com/bejiitaswrath/nt-3-50-build-782-...</a>
Video of someone exploring the source files with date modified being in 1994: <a href="https://www.youtube.com/watch?v=to_uj-7pGwc" rel="nofollow">https://www.youtube.com/watch?v=to_uj-7pGwc</a>