An excellent site for free download of scores is the Icking Archive. There is a very comprehensive list of composers, though I cannot guarantee that what you want is there!
http://icking-music-archive.org/
Ther are different versions of he score, depending on the score selected, such as a pdf score, and sometimes listen an MP3 recording or a Finale Notation version (which requires the free "Notepad for Finale" to play it)
Tony