The Leonard Bernstein Collection

Bernstein at the ranch of Frieda Lawrence, widow of the writer D.H. Lawrence (1885-1930) in Taos, New Mexico, 1948.
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"The composer, conductor, writer, and teacher Leonard Bernstein (1918-1990) was one of 20th-century America's most important musical figures. The Leonard Bernstein Collection is one of the largest and most varied of the many special collections held by the Library of Congress Music Division. Its more than 400,000 items, including music and literary manuscripts, correspondence, photographs, audio and video recordings, fan mail, and other types of materials extensively document Bernstein's extraordinary life and career. This online Leonard Bernstein Collection makes available a selection of 85 photographs, 177 scripts from 'the Young People's Concerts', 74 scripts from 'the Thursday Evening Previews', and over 1,100 pieces of correspondence, in addition to the collection's complete Finding Aid." (via PLEP)
http://memory.loc.gov/ammem/lbhtml/lbpg01.html