I've never heard of either of them, but EBay is actually a pretty good place to find out of print music. I've been successful in the past.
One thing I looked high and low for was a 12" single of Viki Love - Stop Playing on Me, which I'm sure nobody has ever heard of. I found a used record store in England that had a website and they had it. That is another option - search the web and see what you find.
A good place to get info on rare or out-of-print music on LP is
http://www.discogs.com. The members there even sell or trade from what I can tell.