The fonds consists of Coulthard's incoming family and general correspondence, correspondence from noted English composer Elizabeth Poston, financial records, biographical information, printed material and clippings documenting her involvement in the Canadian and International music communities as an advocate, educator and composer. Also included are original manuscripts of Coulthard's compositions and published and unpublished sound recordings of her work performances. The fonds also contain scrapbooks assembled by Coulthard's mother, Jean Robinson Coulthard, between 1898 and 1929, family photographs, and a photograph album compiled by her father, Dr. Walter Coulthard, depicting the Rossland area (ca. 1902).
Fonds are arranged into two sous-fonds: Jean Coulthard sous-fonds and Coulthard family sous-fonds. Jean Coulthard sous-fonds was organized into the following series: Correspondence (two sub-series, Coulthard-Poston Correspondence and Family Correspondence), Financial and Legal, Biography, Programmes, Publications, Press Clippings, Manuscripts, Sound recordings, Miscellaneous, Photographs, Performance Notes and Remarks, Musical Education and Workshops, Inspirations, Journals and Date Books, and Audio Visual.