The library holds several collections of letters to, from, and about musicians.
In most cases these were assembled as autograph collections, but some represent the personal
files of the musicans themselves (cf. Benoist).
Tollefsen - the extensive Tollefsen autograph collection contains more than 3500
samples of the writing of composers, including Haydn, Brahms, Beethoven, Mozart, etc. Many or most
of the samples given are complete letters or notes.
Benoist - the Benoist collection is primarily composed of the correspondence
of Andre Benoist and his son A.S. Benoist with other musicians. Notable is a long series of personal
letters from violinist Albert Spalding.
Mohr - includes autograph notes and letters of hundreds of contemporary European composers.