As an example of an organisation "Welcome" page, look at CERN :-).
As examples of different types of data displayed as hypertext, look at the alt.hypertext newsgroup, an FTP site (not possible at PARC because of in.gateway), a "gopher" server,...
We can search that server, and having got back a hit list, make an explicit link to the search result.
We can similarly make a link to a chosen document. This demonstrates the consistent rule that anything which you can access you can link to, or quote by reference.
Another example is the CERN phone book which has links and is searchable.
If locally mounted file, this directory.
Tim BL