LibraryMusicSource.com Searchable online collection of Western Classical sheet music. Digital Scores Collection An open collection of scanned images of rare and unique music scores, by Harvard University's Loeb Music Library.
Historic American Sheet Music Project Digital images of over 3000 pieces of sheet music published in the U.S. between 1850-1920 from the Rare Book, Manuscript, and Special Collections Library at Duke University. The Howard W. and Nancy A. Wildin Sheet Music Collection Scanned images of American popular sheet music dating back to the mid-19th century from the Howard W. and Nancy A. Wildin Sheet Music Collection at Gonzaga University. Internet Music Score Library Project Open access collection of online music scores and recordings. Music for the Nation: American Sheet Music, 1870-1885 Part of the Library of Congress' Memory project, this site provides images of over 47,000 pieces of sheet music registered for copyright between 1870 to 1885. Sheet Music Consortium A searchable, open collection of digitized sheet music collaboratively created by libraries across the U.S.
