General Collection of Digital Scores
- Art Song Central
- Brown University African American Sheet Music
- Choral Public Domain
- Eastman School of Music, Sibley Music Library
- Free Scores.com
- Harvard University, Loeb Music Library
- Historic American Sheet Music (Duke University)
- Indiana University, Variations Project
- International Music Score Library Project (IMSLP)
- Library of Congress Notated Music Collections
- Music Notes - Free Digital Sheet Music
- Music Scores: Classical Sheet Music
- Mutopia Project
- New York Public Library American Popular Songs
- Stephen Foster Collection (University of Pittsburgh)
- Tin Pan Alley Sheet Music Collection (University of South Carolina)
- University of Michigan (HathiTrust)
- UCLA Archive of Popular American Music
- UCLA Sheet Music Consortium
- Web Library of Seventeenth-Century Music