African American Sheet Music: Sheet Music Collection at the John Hay Library at Brown University.
American Memory: Multimedia collections from the Library of Congress of digitized documents, photographs, sound recordings, motion pictures, and texts.
Archives of African American Music and Culture: Indiana University's Archives of African American Music and Culture (AAAMC)
Black Grooves: AAAMC: A music review site hosted by the Archives of African American Music & Culture (AAAMC) at Indiana University.
Center for Black Music Research: An independent research unit of Columbia College Chicago devoted to documentation, research, preservation, and dissemination of information about the history of black music on a global scale.
Choral Public Domain Library: A collection of free public domain choral music.
Deutsch Mozart Letters and Documents – Online Edition: The Salzburg Mozarteum Foundation
Free-Scores.com: A collection of free contemporary, classical and educational sheet music for all instruments
Gutenberg Sheet Music Project: Public domain sheet music
Historical American Sheet Music (Duke University): 3042 pieces from the collection, published in the United States between 1850 and 1920.
IMSLP (Petrucci Music Library): International Music Score Library Project (IMSLP), is an extensive collection of free public access music scores.
Lester S. Levy Collection of Sheet Music: 29,000 pieces of American popular music.
Library of Congress: Performing Arts Encyclopedia: Sheet music, sound recordings, moving images, manuscripts, photographs, and oral histories.
The Library of Congress Celebrates the Songs of America: American history through songs. Recordings, essays, articles.
Music for the Nation: American Sheet Music: Popular songs, piano music, sacred and secular choral music, solo instrumental music, method books and instructional materials, and music for band and orchestra.
Mutopia Project: 2024 pieces of music
New Music USA: Works by more than 6,000 composers with over 14,000 media samples (recordings and scores).
NMA Online: Neue Mozart-Ausgabe: Digitized Version: Musical text and the critical commentaries of the entire Neue Mozart-Ausgabe
Sheet Music Consortium: An open collection of digitized sheet music using the Open Archives Initiative Protocol for Metadata Harvesting.
Sibley Music Library: Sheet Music Collection: Public domain music scores.
UWM Sheet Music Collection: Collection of individual sheet music - from song sheets to solo piano and violin sonatas.