Download public domain classical music scores:
Acadia Online MusicScores
Duke University Music Library
Eastman School of Music Sibley Music Library
Hemingway's Studio
The Horowitz Scores Online
Igor Stravinsky - pre 1923
International Music Score Library Music Project
<<< Large Archive
Internet Archive
Library of Congress
Gustav Mahler Symphonies
Musopen!
The Mutopia Project
Piano Repertory Repository
UCLA Music Library
Ukraine Music Library
Variations @ Indiana University
Warner Icking Music Archive