Medieval Music Database -- "Covers all of the music of the fourteenth century and all liturgical chant currently electronically indexed"; 70,000 works may be browsed. Features include searching by text and/or melody.
Classical Music Library -- A streaming online music database, featuring classical music from over 32 labels. Includes a reference section with biographies, a glossary, images, and MIDI files. Use restricted to current Pacific users.
19th-Century California Sheet Music A virtual library of approximately 2,000 pieces of sheet music published in California between 1852 and 1900, together with related material such as programs, advertisements, and photographs.
African American Sheet Music, 1850-1920 Subject, name, and title access to digitized images (both covers and music) of 1,305 pieces of African American sheet music from Brown University, which has one of the largest library collections of sheet music (approximately 500,000 items) in United States.
Civil War Sheet Music Collection From the Performing Arts Reading Room of the Library of Congress, this collection includes digital images of over 2,500 pieces of sheet music about the Civil War, published during the war.
Inventions of Note: Sheet Music Collection From the Lewis Music Library at the Massachusetts Institute of Technology. The pieces in this online collection (ca. 75) date mostly from ca. 1890 to 1920, and all portray in their lyrics or cover art technologies that were new at that time (automobile, airplane, telephone, etc.).
The Lester S. Levy Collection of Sheet Music From Johns Hopkins University. An online catalog of over 29,000 pieces of American sheeet music dating from 1780 to 1960. For works from before 1923, an image of the cover and of each page of music is retrievable.
Music for the Nation: American Sheet Music, 1870-1885 This online collection currently includes over 47,000 musical compositions that were registered for copyright between 1870 and 1885. Included are popular songs, piano music, sacred music and secular choral music, solo instrumental music, method books and instructional materials, and music for band and orchestra. Both catalog records and digital images of the sheet music are available, allowing users to search or browse by author, title, or subject, and view the complete musical notation.
Music for the Nation: American Sheet Music, 1820-1860 Documenting the development of popular music in America and the American music publishing industry, this collection includes over 15,000 pieces of sheet music registered for copyright between 1820 and 1860.