Here are some links I stumbled upon while searching for sites that might have useful information on SQUIDs. The starting places are accessible through
   ==>Help with Campus Computing Resources
      ==>Searching the Web by Subject

I started with YAHOO, one of the richest WWW subject indexes, and looked first at YAHOO Physics links (note that superconductivity is one of the categories)

Webcrawlers/spiders/webtenders are another important class of WWW search tools. An OpenText search produces several useful-looking links:

And other links led me on to these: