The Gaylord Sheet Music Collection represents the accumulation of many private and publisher’s collections, a large segment of which is of pre-1875 music.
Sheet Music Collections Overview - Sheet Music in Library Special Collections - Research Guides at UCLA Library
Sheet Music Collections - University Libraries
Farewell, my Annabelle : march song - Sheet music - The University of Alabama Libraries Special Collections
John Arpin Collection Launch and Celebration · News from the Clara
Vocal Popular Sheet Music Collection, Public domain (may be downloaded in full)
Everybody Takes You By The Hand : L. J. Kaley : Free Download, Borrow, and Streaming : Internet Archive
The WFAA and WBAP Sheet Music Collections at the University of North Texas Music Library - UNT Digital Library
Collections with Notated Music, Notated Music
Ave Maria - Pacific Northwest Sheet Music Collection - University of Washington Digital Collections
America Goes to War, 1917: Sheet Music from World War I, UNO Libraries