Donald S. Sutherland is an organist and former coordinator of the Organ Department faculty at the Peabody Conservatory. The Donald Sutherland papers, approximately 1929-2015, contain documents and musical scores related to Sutherland's career as an organist and organ instructor.

Howard Thatcher was a pianist, organist, composer, and teacher in the Baltimore area. He was an alumnus of Peabody who taught harmony, counterpoint, orchestration, and composition for the Peabody Conservatory. The Howard R. Thatcher papers contain his manuscript and published scores as well as personal papers.

John Walker (b. 1941) is an organist and member of the Peabody Conservatory faculty. He served as a director or minister of music for several churches, including appointments at the Riverside Church in New York City, 1979-1992. The John Walker papers contain materials related to his career as a concert organist, including programs, repertoire lists, photographs, correspondence, annotated scores of organ music, and unpublished sound recordings.

Rodney Hansen was an organist and choirmaster who graduated from the Peabody Conservatory of Music and spent much of his career in Baltimore. His personal papers include correspondence, concert programs, and clippings related to his career.