This may help someone. I got this from a UK mailing list so it may work
for Wales also.
Betty Pace
--------- Forwarded message ----------
This is a marvelous resource. It tells you the closest library
possessing your book. I even tried several exotic books--only in college
libraries and Lib of Congress. Good for inter-library loan.. It works
for genealogy books/.
Betty Pace
--Forwarded From another mailing list:--
There is an easy way to find books that are in libraries that have their
catalogues linked online. This is most public libraries, many college
libraries and some genealogical/historical society libraries.
The site is WorldCat [OCLC)]
http://www.worldcat.org/
Use the search engine to search for a specific title or author or
subject. A search for William D. Bennett gave a list of books he had
written. Click on the desired book title and it will give a list of
libraries that hold that book. If you enter your zip code, it will
even sort the libraries by distance from your home.
For example: I searched on William D. Bennett and got 1629 hits for
William Bennett even though I had specified the middle initial D. I
refined the search specifically for William D. Bennett and got 37
hits--a manageble number. I chose "Orange County Records" and got a
list of 72 libraries that hold that title, the nearest of which is 66
miles from my home.
This has helped me find lots of books. I now keep a list of books
and their locations. When I travel, I know what libraries I need to
visit!! Happy searching.