In addition to that one. Also try

For general CDs / LPs and Singles
[url]http://www.musicstack.com[/url]
[url]http://.eil.com[/url]

Details of K-Tel albums here
[url]http://www.ktelclassics.com/discoframesetmaster.html[/url]

And this one for Country LPs
[url]http://www.luma-electronic.cz/lp/elpe.htm[/url]

And for those hard to find Bluegrass Titles
[url]http://www.ibiblio.org/hillwilliam/BGdiscography/[/url]