Try Public Domain Music (http://www.web-helper.net/PDMusic/A/images/btsa0024.gif).

I scan a lot of stuff in, but don't have much luck with stuff from the web - size of the print is too small to scan right, resolution isn't right, etc. etc. etc. It's a horrible disappointment and playing with the graphic in Paint Shop Pro or Corel) does not help. One of these days I will devote more time to it. I hope you have better luck!!!