Don't forget this guy: http://www.xs4all.nl/~johanw/contents.html, http://www.xs4all.nl/~johanw/mcontents.html.
> Somebody asked about where to find relevant information on any specific
> area of interest (physics, chemistry, etc.), and suggested that people
> would list the ``standard'' texts on various subjects for others.
> It appears as if The Open Directory Project <URL:http://dmoz.org/>
> might have some interest for the entity which originated the request:
> The Open Directory Project's goal is to produce the most
> comprehensive directory of the web, by relying on a vast army of
> volunteer editors.