More info here:
<a href="http://infomesh.net/html/history/early/" rel="nofollow">http://infomesh.net/html/history/early/</a><p>> In fact, the earliest HTML document on the WWW at the moment dates from 13th November - a couple of weeks before the conference - as evidenced a HTTP HEAD request, which returns "Last-Modified: Tue, 13 Nov 1990 15:17:00 GMT". The page is still functional in most modern Web browsers, and even contains a functional HyperLink!