American Philatelic Society. Info of all kinds. Library are rotated periodically to eventualluy cover APS holdings. Lots of info here. Not all servers are on-line all the time.
Some people do watch their power bills.
The nature of URLs allows for ease in making an error in either interpreting or copying what someone has provided. This applies a. AS SUCH, anyone finding errors with the above, please just post the correction. In regard to my recent post of Scandinavian philatelic URL's on the Web, I received a response about a library resource that also may be of interest to others. Library funds provide for acquisition of proposals and newly published literatur, for production of slide shows, and for publication for manuscripts. . . .