Uncatalogued material is also accessible. LC subject headings are used. The material is arranged according to an in-house classification scheme based on accession numbers. The holdings are recorded in the National Library Union Catalogue. The collection is housed in the Gustav Mahler-Alfred Ros Rare Book Room of the Music Library, which is open to researchers.
Tours are also available.
Photocopying, microfilming, and photography services are provided by the staff. University of Western Ontario, 1979. A University of Western Ontario information sheet is also available.