Fonds consists of records pertaining to the administrative, operational, financial, and artistic activities of the ASO. Included are materials documenting the Board of Directors, box office operations (including ticket sales), financial affairs, fundraising, general administration, guest artists, orchestra members, public relations and publicity, and the union. Also included is the photograph series which presents a visual record of various aspects of the orchestra's activities, including performances and women's auxiliary events as well as publicity shots of musicians, conductors, staff, and guest artists.

File contains a book, given to John Daniel Logan and inscribed for the "D.W. Logan Library of Canadiana." The book contains information on each music festival held in Canada in 1903, organized by city.