Free-Scores.com

Free public-domain scores must be a good thing. But be careful - check the small print. If it's very old, and it's a very old edition, there's a good chance it's okay to use. Yesterday, for example, I found an early 19th century cello tutor, in pdf format. Exactly what I wanted, and saved a trip to another library's Special Collections. Worth a look. Free-Scores.com.