Lilly Music Library has a variety of unique items, including facsimile scores reproduced from original manuscript sources or early editions; music memorabilia/boxed sets; and special editions.
Here is just a sampling of what you might find:
14th century Italian part songs in Il Codice Squarcialupi: Ms. Mediceo Palatino 87, Biblioteca Laurenziana Di Firenze (facsimile)
Chansonnier de Jean de Montchenu (heart-shaped, facsimile)
Early Tudor music in The Eton Choirbook (facsimile)
John Cage's Indeterminacy: Ninety Stories (score on cards)
Radiohead's OK Computer: Oknotok 1997 2017 (boxed set)
You can find unique materials using the search function in JumboSearch.
Music Collections at Tisch Library
Tisch Library houses a number of music special collections, most notably the Frédéric Louis Ritter Collection, as well as archival collections located in the Tufts Archival Research Center (TARC), including composer T. J. Anderson's Papers 1889-2019, sheet music collection by Tufts composers (1883 - 1943), and composer John McDonald's Papers.
For assistance with music-specific collections, please contact Anna Kijas.
For questions about accessing Tisch Library special collections, please contact Chris Barbour.
For questions about archival collections, please contact the Tufts Archival Research Center staff.