Musical scores are classed under M in the library; most scores and printed music are in the Martin Music Library on the first floor of the library. To search for a specific score, you can use the library search, then limit the Resource Type to "scores", or use the search-box below, which automatically adds that limit.
Search for scores and printed music in the library:
World Telegram & Sun photo by Al. Ravenna
[Leonard Bernstein, half-length portrait, facing right, seated at piano, making annotations to musical score, 1955
Library of Congress