The Baltimore Chapter of the American Guild of Organists (AGO) is a regional professional organization for organists and choral conductors. It was named the Chesapeake Chapter from its founding in 1924 until the late 1980s or early 1990s. The chapter records contain administrative documents, correspondence, yearbooks, newsletters, and related materials produced or collected by the chapter.

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.

The George R. Woodhead papers contain personal papers and concert programs acquired over his career as a choral conductor and professor of music at Goucher College and other musical institutions in the Baltimore area. The documents include correspondence, newspaper clippings, photographs, teaching material, and financial documents. The majority of the concert programs come from performances by local churches, Johns Hopkins University, Goucher College, and the Bach Society of Baltimore.

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.

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.