How do I find an out of print book?

When I was a kid I remember seeing a book that was like an yearbook of all newspapers published by the Times during WW II. Each of the years is compiled into a different book. It gave one a very uniqie perspecitev into the UK druing the war, and even had advertisements from thaat time.Anybody out there know how to track such books?

There are several websites that you can find rare or out of print books. A couple would be alibris.com or abebooks.com. These sites list books by booksellers all over the country and some internationally.