Musical compositions, correspondence, photographs, writings, clippings, and ephemera of pianist Arthur Friedheim and members of the Friedheim family.

Enrico Caruso (1873-1921) was one of the most popular operatic tenors of his era. After beginning his career in his native Italy, Caruso immigrated to the United States and became a star at the Metropolitan Opera. His papers include manuscript and published scores belonging to Caruso, photographs, correspondence, scrapbooks and clippings about his career, caricatures and other artwork, recordings, and ephemera.

Frank Willis was a classical pianist and composer who attended Peabody Conservatory and was a composer and conductor for the West Virginia Symphony Orchestra. His papers include manuscript and published scores and some contextual material.

Hugh Raymond Newsom (1891-1978) was an organist and composer who lived in Baltimore. The collection includes manuscript scores of music composed by Hugh Newsom or by his wife, harpist Marjorie Brunton Newsom; documents related to Hugh Newsom's career; and reel-to-reel recordings of his music.

Jean Eichelberger Ivey (1923-2010) was a composer, pianist, electronic musician, professor, and the founder of the Peabody Conservatory Electronic Music Studio, which she directed from 1969 until her retirement from Peabody in 1997. The Jean Eichelberger Ivey papers contain scores and recordings of Ivey's musical works, writings and notes by Ivey, personal and professional correspondence, programs and clippings, photographs, and other personal and professional papers.

John Charles Thomas was an internationally known baritone who attended Peabody Institute from 1909 to 1912. His papers include scores, personal and business papers, concert programs, clippings, correspondence, ephemera, photographs, and recordings.

Joseph Schillinger was a theorist and composer famous for developing the Schillinger System, a method of deconstructing music using geometric phase relationships. The collection contains correspondence, recordings, scrapbooks, photographs, artwork, manuscript scores, and other documents related to his professional and personal life.

Otto Ortmann was the director of Peabody Conservatory of Music from 1928 to 1941 and founder of the conservatory's department of research, where he conducted studies on the education, psychology, and physiology of music. His papers include scores of original compositions, writings on music research, research notes, administrative files, concert programs, photographs, and teaching materials.

Paul Vacek was a violinist, pianist, and composer (using the pen name Paul Vazkén) who studied at the Peabody Conservatory of Music from 1946 to 1949. His papers contain manuscript scores of his compositions and arrangements, drafts and fragments of manuscript scores, and personal papers.

Soprano Phyllis Bryn-Julson taught at the Peabody Conservatory from 1984 to 2017 and is recognized as one of the most authoritative interpreters of vocal music of the 20th century. Her collection contains manuscript and facsimile scores by several notable composers with whom she worked, including Milton Babbitt, Pierre Boulez, Heinz Holliger, and David Del Tredici, as well as correspondence, programs, clippings, photographs, and other documents related to her career.